Ultimate Spellbook

Ultimate Spellbook is a Featured Game Mode in League of Legends. Players choose one additional, random champion's ultimate ability to deploy in chaotic duels and teamfights.^[1]

Overview[]

Map: Summoner's Rift 5v5
Draft type: 10 Blind-Ban draft
Mode: Classic

Features[]

Ultimate Spellbook ulternate spell selection — Ultimate spell selection UI

One summoner spell slot is occupied by a Placeholder Ult-ernate Summoner Spell that cannot be swapped out with another summoner spell. Junglers instead have a Placeholder and Attack-Smite.
At the start of the match, you will be given 30 seconds to choose from a pool of 4 ultimates.
- If you do not confirm to take the ultimate you have selected, that ultimate will be taken automatically.
- If you do not select any ultimate, the first ultimate is taken by default.
Once an ultimate has been picked, your Placeholder Ult-ernate Summoner Spell is switched to Loading Spell, which is then shortly after switched to the Ult-ernate Summoner Spell version of the ultimate you chose.
- You can still rank up your own champion's ultimate.
- The icons of Ult-ernate Summoner Spells in-game are not the icon of the specific champion's ultimate ability. They use the champion's portrait icon instead for better clarity.
All Ult-ernate Summoner Spells do not have resource costs and have an initial cooldown of 130 seconds, increased to 210 if you have Attack-Smite.
- These ultimates can be used even before reaching level 6.
At 8:00, all players are offered another selection of 4 ultimates to replace their current ultimate with a different one. This occurs every 6 minutes thereafter.
The selection is offered only while either dead or at the fountain.

The ultimate's cooldown is refreshed after selection.

The player's current ultimate is always the first ultimate offered in the selection, meaning that the player may choose to keep the ultimate they have by selecting the first slot in the pool or replace it with a different one available from the rest of the pool (3 ultimates).
If the current ultimate is on cooldown, it will still be refreshed after choosing to keep it.

Each time a player swaps their current ultimate for a different one, their champion gains 300 and 5 − 20 (based on level) adaptive force, armor, and magic resistance permanently.
All players have 80 summoner spell haste, bonus health, and 40 bonus movement speed out-of-combat.
You can see everyone's chosen Ult-ernate Summoner Spells on both the scoreboard and next to their health bar.
You start at level 3 and with 950.
Passive experience and gold are increased and you share minion gold with teammates in lane.
Slaying Baron Nashor or Elder Dragon, or acquiring the Dragon Soul, rewards your team with an Ulternate Summoner Charge.
- Ulternate Summoner Charge: After casting your Ulter-nate Summoner Spell, consume this effect to refresh the cooldown of the spell after 3 seconds of having casted it.
Turret Platings fall off at 9:00.
Rift Scuttler spawns at 3:00 and has a respawn timer of 90 seconds.
The Voidgrub camp spawns at 3:30 and has a respawn timer of 150 seconds.
Dragon spawns at 4:00 and has a respawn timer of 240 seconds.
Baron Nashor spawns at 10:00 and has a respawn timer of 180 seconds.
- Slaying Baron Nashor leaves behind an Eye of the Herald.
Unsealed Spellbook is disabled in this mode and is exchanged with First Strike.

Attack-Smite[]

Junglers have "Placeholder and Attack-Smite" instead of Placeholder Ult-ernate Summoner Spell in champion select. It gets replaced by the Ult-ernate Summoner Spell that they select at the beginning of the game and causes jungle items ( ) to gain a new passive effect named Attack Smite.

Attack Smite: Damaging the Blue Sentinel, Red Brambleback, or Rift Scuttler, or epic monsters, to below or while they are below 600 / 900 / 1200 (based on jungle pet evolution) health executes them.
Only affects the Blue Sentinel and Red Brambleback within the user's respective side of the jungle.

This effect does not allow Ivern to bypass Friend of the Forest's grove maturation timer.

Ultimates[]

The following table lists all currently available ultimates that are applicable to be chosen as Ult-ernate Summoner Spells, as well as any exclusive changes they have in this mode:

Ultimate	Mode-specific changes
Aurora's Between Worlds	• No default ability haste. • Base damage changed to 200 / 325 / 450. • Rift duration changed to 2.25 / 2.75 / 3.25 seconds.
Ahri's Spirit Rush	• Cooldown changed to 140 / 115 / 90 seconds. • Scales with 60% of its regular ratios.
Akali's Perfect Execution	• Cooldown changed to 120 / 90 / 60 seconds. • First cast base damage changed to 80 / 220 / 360. • Second cast minimum base damage changed to 60 / 130 / 200. • Second cast maximum base damage changed to 180 / 390 / 600.
Amumu's Curse of the Sad Mummy	• No default ability haste. • Base damage changed to 150 / 250 / 350. • Scales with 60% of its regular ratios.
Annie's Summon: Tibbers	• Cooldown changed to 120 / 100 / 80 seconds. • Tibbers' base health changed to 1300 / 2200 / 3100. • Tibbers' base health's ratios removed.
Ashe's Enchanted Crystal Arrow	• Default ability haste changed to 20. • Scales with 25% of its regular ratios.
Azir's Emperor's Divide	• No default ability haste. • Base damage changed to 175 / 325 / 475. • Scales with 64% of its regular ratios.
Bard's Tempered Fate	• No default ability haste.
Bel'Veth's Endless Banquet
Blitzcrank's Static Field	• No default ability haste. • Mana ratio removed. • Scales with 60% of its regular ratios.
Caitlyn's Ace in the Hole	• Base damage changed to 300 / 525 / 750. • Cooldown changed to 66.6 / 55.5 / 44.4 seconds. • Scales with 133.3% of its regular ratios. • Critical strike chance ratio reduced by half.
Camille's The Hextech Ultimatum	• No default ability haste. • Health ratio unchanged.
Cassiopeia's Petrifying Gaze	• No default ability haste.
Cho'Gath's Feast	• No default ability haste. • Bonus health per stack changed to 60 / 90 / 120. • Scales with 133.3% of its regular ratios. • Chance of appearing in selection pool compared to other ultimates has been reduced.
Corki's Missile Barrage	• Scales with 91.43% of its regular ratios.
Diana's Moonfall	• No default ability haste.
Dr. Mundo's Maximum Dosage	• Default ability haste changed to 20.
Ekko's Chronobreak	• Default ability haste changed to 20.
Evelynn's Last Caress	• No default ability haste. • Scales with 52% of its regular ratios.
Ezreal's Trueshot Barrage	• Scales with 90% of its regular ratios.
Fiddlesticks' Crowstorm	• No default ability haste. • Total base damage changed to 625 / 1125 / 1625. • Scales with 54% of its regular ratios.
Fizz's Chum the Waters
Gangplank's Cannon Barrage	• Cooldown changed to 180 / 160 / 140 seconds.
Garen's Demacian Justice	• No default ability haste. • Health ratio unchanged.
Gnar's GNAR!
Gragas' Explosive Cask	• No default ability haste.
Gwen's Needlework	• Cooldown reduced to 100 / 90 / 80 seconds. • Scales with 90% of its regular ratios.
Hwei's Spiraling Despair	• Scales with 70% of its regular ratios.
Janna's Monsoon	• Default ability haste changed to 15.
Jarvan IV's Cataclysm
Jhin's Curtain Call	• No default ability haste. • Regular ratios unchanged.
Jinx's Super Mega Death Rocket!	• Health ratio unchanged. • Scales with 72.72% of its regular ratios.
Kai'Sa's Killer Instinct	• No default ability haste. • Regular ratios unchanged.
Karthus' Requiem	• No default ability haste.
Kayle's Divine Judgment	• No default ability haste.
Kayn's Umbral Trespass	• Scales with 93.3̅% of its regular ratios.
Kennen's Slicing Maelstrom	• No default ability haste. • Scales with 70% of its regular ratios.
Kha'Zix's Void Assault	• No default ability haste.
Kindred's Lamb's Respite	• No default ability haste.
Lee Sin's Dragon's Rage	• No default ability haste. • Health ratio unchanged.
Leona's Solar Flare	• No default ability haste.
Lissandra's Frozen Tomb	• No default ability haste. • Scales with 50% of its regular ratios.
Lucian's The Culling	• No default ability haste. • Regular ratios unchanged.
Lulu's Wild Growth
Lux's Final Spark	• No default ability haste. • Scales with 75% of its regular ratios.
Malphite's Unstoppable Force	• No default ability haste. • Cooldown is now affected by -16 ability haste. • Scales with 50% of its regular ratios.
Malzahar's Nether Grasp	• No default ability haste.
Maokai's Nature's Grasp	• No default ability haste.
Milio's Breath of Life	• No default ability haste.
Miss Fortune's Bullet Time	• Regular ratios unchanged.
Mordekaiser's Realm of Death	• No default ability haste.
Morgana's Soul Shackles	• No default ability haste. • Bonus movement speed changed to 5 / 30 / 55%.
Nami's Tidal Wave
Nasus' Fury of the Sands	• No default ability haste.
Nautilus' Depth Charge	• No default ability haste. • Scales with 65% of its regular ratios.
Neeko's Pop Blossom	• No default ability haste.
Nilah's Apotheosis
Nocturne's Paranoia	• No default ability haste.
Nunu's Absolute Zero	• Default ability haste changed to 28. • Scales with 66.6% of its regular ratios.
Olaf's Ragnarok	• No default ability haste. • Scales with 46% of its regular ratios.
Orianna's Command: Shockwave	• No default ability haste. • Base damage changed to 250 / 300 / 350. • Scales with 67.37% of its regular ratios.
Ornn's Call of the Forge God	• No default ability haste.
Poppy's Keeper's Verdict	• No default ability haste.
Quinn's Behind Enemy Lines
Rakan's The Quickness
Rell's Magnet Storm	• Default ability haste changed to 15.
Renata Glasc's Hostile Takeover
Ryze's Realm Warp	• Cooldown changed to 210 / 180 / 150 seconds.
Senna's Dawning Shadow	• Base damage changed to 250 / 375 / 500. • Healing scales with 64% of its regular ratios.
Seraphine's Encore
Shen's Stand United	• No default ability haste.
Singed's Insanity Potion	• No default ability haste.
Skarner's Impale	• No default ability haste.
Smolder's MMOOOMMMM!
Soraka's Wish	• Cooldown changed to 160 / 145 / 130 seconds.
Sylas' Hijack	• No default ability haste. • Cooldown is now affected by -20 ability haste. • Hijacks the target enemy's Ult-ernate Summoner Spell.
Syndra's Unleashed Power	• No default ability haste. • Scales with 90% of its regular ratios.
Taliyah's Weaver's Wall
Talon's Shadow Assault	• No default ability haste.
Tristana's Buster Shot	• No default ability haste.
Tryndamere's Undying Rage	• Cooldown changed to 110 / 100 / 90 seconds.
Urgot's Fear Beyond Death
Varus' Chain of Corruption	• No default ability haste.
Vel'Koz's Life Form Disintegration Ray	• Scales with 90% of its regular ratios.
Vex's Shadow Surge	• No default ability haste.
Vi's Cease and Desist	• Base damage changed to 150 / 325 / 500. • Cooldown changed to 120 / 100 / 80 seconds. • Scales with 97.7% of its regular ratios.
Viktor's Chaos Storm	• No default ability haste.
Xayah's Featherstorm
Xerath's Rite of the Arcane	• Regular ratios unchanged.
Xin Zhao's Crescent Guard	• No default ability haste. • Health ratio unchanged.
Yone's Fate Sealed	• No default ability haste.
Zoe's Portal Jump	• No default ability haste.
Ziggs' Mega Inferno Bomb
Zilean's Chronoshift

Notes[]

Ult-ernate Summoner Spells by default have their cooldown affected by 35 ability haste and scale with 80% of their regular ratios (unless stated otherwise).
Chosen ultimates have modified scalings in this mode, based upon the reduced ratios:
Ultimates that scale with AP but not AD, now also scale with AD.
These ultimates now scale with 2.414% bonus AD per 1% AP.

Ultimates that scale with AD but not AP, now also scale with AP.
These ultimates now scale with 0.6% AP per 1% total AD and 0.4% AP per 1% bonus AD.

Ultimates that scale with health but not AP nor AD, now also scale with AD and AP.
These ultimates now scale with 13.158125% bonus AD and 8.198125% AP per 1% bonus health.

Ultimates that do not scale with anything will continue to scale with nothing.
Ult-ernate Summoner Spells level up as your champion's personal ultimate levels up to rank 2 and 3 at levels 11 and 16 and benefit from summoner spell haste as well as ultimate haste.
Ultimates are treated as summoner spells for the purposes of effects that interact with them, such as Nimbus Cloak.
Axiom Arc's Flux does not reduce the cooldown of Ult-ernate Summoner Spells.
Ult-ernate Summoner Spells are not applicable to drop as Spell Shards for Zoe's Spell Thief.
The following ultimates will grant a permanent 5 − 20 (based on level) adaptive force, bonus armor, and bonus magic resistance after their initial cooldown at the start of the game has elapsed:
Bard's Tempered Fate

Gwen's Needlework

Janna's Monsoon

Kai'Sa's Killer Instinct

Poppy's Keeper's Verdict

Rell's Magnet Storm

Ryze's Realm Warp

Taliyah's Weaver's Wall

Xerath's Rite of the Arcane

Zoe's Portal Jump
Your champion's ultimate will not be available in the pool of ultimates.
The leftmost ultimate in the offered selection is weighted depending on a champion's class in order to avoid sub-optimal choices.^[2]

Mode-Specific Changes[]

This table extracts the data from Module:ChampionData/data and Template:map_changes/data/usb.

Champion	Damage dealt	Damage received	Other effects
Ahri		-5%
Alistar	-5%
Ambessa		-5%
Anivia	+10%	-10%
Aphelios	-5%
Ashe		-5%
Aurelion Sol	+5%		Movement speed increased by 20%.
Bard	+8%	-8%	Movement speed increased by 20%.
Bel'Veth	-10%
Blitzcrank	+5%	-5%
Brand	-5%
Elise	+5%	-5%
Evelynn	+10%
Fiddlesticks	+5%	-5%
Fiora	-5%	+5%
Graves	-5%
Gwen	-5%	+5%
Ivern		-5%
Jarvan IV	-5%
Jax	-5%	+5%
Kindred	-5%	+5%
Lillia	-5%
Master Yi		+5%
Mel		-5%
Miss Fortune	+5%	-5%
Mordekaiser		+5%
Nasus		-5%
Neeko		-5%
Nidalee	+5%	-5%	Healing done increased by 20%.
Nunu & Willump	+5%	-5%	Healing done increased by 20%.
Rammus	+5%	-5%
Rell	-10%	+5%
Samira	-10%		Shielding done reduced by 1%.
Senna	+10%		Healing done increased by 20%.
Sett	-5%	+5%
Singed		+5%
Thresh			Shielding done increased by 0%. Movement speed increased by 20%.
Trundle		+5%
Vi	-5%	+5%
Viego	-5%		Healing done reduced by 20%.
Warwick	-5%
Wukong	-5%
Xayah		-5%
Xin Zhao	-5%	+5%
Yuumi	-5%		Shielding done reduced by 25%. Healing done reduced by 25%.

Unsealed Spellbook

This rune is disabled.

Click on the tabs above for more information.

Trivia[]

Ultimate Spellbook released with a unique Ruined Dragon using Mordekaiser's dragon from Children of the Grave during the 2021 Sentinels of Light Event. It was then supplanted by Hextech Drake & Chemtech Drake in V11.23 during the RiotX Arcane event. It granted a dragon soul similar to Chemtech Drake.
Ultimate Spellbook used a standard Blind pick drafting type in its first launch.

Patch History[]

V14.19 - Hotfix

Undocumented: Bonus resistances and adaptive force after swapping ultimates reduced to 5 − 20 (based on level) from 5 − 35 (based on level).
Undocumented: Bonus resistances and adaptive force granted by certain ultimates after their cooldown elapses reduced to 5 − 20 (based on level) from 5 − 35 (based on level).

V14.19

Ulternate Summoner Spells
Re-rolls
After 8 minutes and every 6 minutes thereafter, players can now re-roll their current ultimate while dead or at the fountain. They are offered another selection of 4 ultimates to choose from each time they receive a re-roll.
The first ultimate in the slot will be always be the current one; players can choose to keep their current ultimate.

Each time a player swaps their current ultimate, their champion gains 300 and 5 − 35 (based on level) adaptive force, armor, and magic resistance permanently.

Cooldown refresh
Slaying Baron Nashor or Elder Dragon, or acquiring the Dragon Soul, will now reward your team with an extra use of their Ult-ernate Summoner Spell, causing the cooldown of the spell to be refreshed after 3 seconds of having casted it.

The following ultimates have been added to the pool:
Aurora's Between Worlds

Bel'Veth's Endless Banquet

Hwei's Spiraling Despair

Kennen's Slicing Maelstrom

Leona's Solar Flare

Milio's Breath of Life

Nami's Tidal Wave

Nautilus' Depth Charge

Olaf's Ragnarok

Ornn's Call of the Forge God

Smolder's MMOOOMMMM!

Sylas' Hijack

Tryndamere's Undying Rage

Ziggs' Mega Inferno Bomb

Zilean's Chronoshift
One for All-timate Spellbook
- Disabled due to conflict with the new ultimate re-roll functionality.
Attack-Smite
New Effect: Now causes jungle items to gain the passive effect Attack-Smite.
Old Effect: Causes basic attacks against Blue Sentinel, Red Brambleback, Rift Scuttler, or epic monsters while they are below 450 health to deal 450 bonus true damage.
Jungle items
New Effect: Gustwalker Hatchling, Mosstomper Seedling, and Scorchclaw Pup now gain a new passive effect named Attack-Smite if the user had the "Placeholder and Attack-Smite" summoner spell, which is replaced by the Ult-ernate Summoner Spell that they select at the start of the game.
Attack-Smite: Damaging the Blue Sentinel, Red Brambleback, or Rift Scuttler, or epic monsters, to below or while they are below 600 / 900 / 1200 (based on jungle pet evolution) health executes them.
Monsters
- Rift Scuttler
  - Spawn time reduced to 3:00 from 3:30.
  - Respawn time reduced to 90 seconds from 180.
- Voidgrub
  - Spawn time reduced to 3:30 from 6:00.
  - Respawn time reduced to 150 seconds from 240.
- Dragon
  - Spawn time reduced to 4:00 from 5:00.
  - Respawn time reduced to 240 seconds from 300.
- Baron Nashor
  - Spawn time reduced to 10:00 from 20:00.
  - Respawn time reduced to 180 seconds from 300.
New champion bounty system.
Objective bounties timer reduced to 10:00 from 14:00.
Passive summoner spell haste increased to 80 from 70.
Removed: Slaying epic monsters no longer grants a buff that deals 0.3% maximum health magic damage once every second against turrets whenever you damage them.
Removed: Obsidian Edge has been removed from the mode and no longer replaces the current jungle items.
Removed: Champions no longer passively gain 15% tenacity.

V12.17

One for All-timate Spellbook
- Chance for the gamemode to occur has been increased.
Ulternate Summoner Spells
- The following ultimates have been updated to match functionality to the original champion's ultimate:
- Bug Fix: Several missing translations in the tooltips of Ulternate Summoner Spells have been fixed.
- Bug Fix: Champion icon that appears next to the health bar after consuming a champion's soul from Mordekaiser's Realm of Death is now properly removed once the champion respawns.
- Bug Fix: All Ulternate Summoner Spells will now properly use the original champion's channel/cast time animation rather than using the caster's ultimate animation.
- Bug Fix: Several spell status icons are now displayed properly.

V12.16

One for All-timate Spellbook
- Each game of Ultimate Spellbook will have a slight chance for the pool of ultimates for all players to contain the same ultimate in all 4 of the selections.
Bug Fix: Annie's Summon: Tibbers and Viktor's Chaos Storm no longer trigger Nimbus Cloak when repositioning their ultimate
Bug Fix: Cannon minions were actually giving too much gold. They will now hand out 3 less gold from the first cannon wave, and cap out at 101 gold around 12 minutes into the game.
Bug Fix: Akshan no longer fires attacks during Heroic Swing while casting Lucian's The Culling.
Bug Fix: Aphelios no longer gets stuck in T-pose after casting certain ultimates.

V12.15

Aurelion Sol
- Outgoing damage modifier changed to +5% from 0%.
- Bonus movement speed changed to +5% from 0%.
Xin Zhao
- Outgoing damage modifier changed to -5% from 0%.
- Incoming damage modifier changed to +5% from 0%.
Ulternate Summoner Spells
- New Effect: Gwen's Needlework now benefits from the bonus stats.
- Annie's Summon: Tibbers AD and AP ratios reduced to 80% from 100%.
- Bug Fix: Akali's Perfect Execution indicator now correctly shows as on cooldown after R2 cast.
- Bug Fix: Kai'Sa's Killer Instinct now correctly functions by applying the Plasma indicator on your own auto attacks, or any of your team's Immobilizing effects. Updated tooltip to match its usage.
- Bug Fix: Urgot's Fear Beyond Death no longer disables spell slots incorrectly when locked by other sources.
- Bug Fix: Neeko's Pop Blossom no longer turns the owner invisible when dying before the cast finishes.
- Bug Fix: Ahri's Spirit Rush no longer makes Q or W permanently free to cast.
- Bug Fix: Fixed Sylas incorrectly getting permanently stuck with Yone or Kha'Zix ultimates after stealing them.
- Bug Fix: Annie's Summon: Tibbers no longer immediately triggers Darius' Hemorrhage.
- Bug Fix: Fix a visual issue when a transformed Kayn uses Morgana's Soul Shackles.
- Bug Fix: Fixed Morgana's Soul Shackles missing VFX.
- Bug Fix: Taliyah's Weaver's Wall indicator will show as on cooldown after recast or time expiration.
- Bug Fix: Taliyah's Weaver's Wall no longer causes a recast indicator on certain champion spells.
- Bug Fix: Fixed missing translations in tooltips for several Ult-ernate Summoner Spells.
- The following ultimates have been updated to match functionality to the original champion's ultimate:
- Added Star Guardian themed particles for the following Ult-ernate Summoner Spells:

V12.14

Ulternate Summoner Spells
- Stat boost for certain ultimates reduced to 5 − 35 (based on level) from 6 − 40 (based on level).
- The following ultimates have been added to the pool:
  - Annie's Summon: Tibbers (re-enabled)
  - Nilah's Apotheosis
- The following ultimates have been updated to match functionality to the original champion's ultimate:

V12.13 - July 15th Hotfix

Alistar
- Outgoing damage modifier changed to -5% from +5%.
Anivia
- Incoming damage modifier changed to -10% from 0%
- Outgoing damage modifier changed to +10% from 0%.
Bard
- Bonus movement speed changed +5% from 0%.
Bel'Veth
- Outgoing damage modifier changed to -10% from 0%.
Evelynn
- Outgoing damage modifier changed to +10% from 0%.
Samira
- Outgoing damage modifier changed to -10% from -5%.
- Shielding modifier changed to -1% from 0%
Senna
- Outgoing damage modifier changed to +10% from 0%.
- Healing modifier changed to +20% from 0%.
Thresh
- Incoming damage modifier changed to 0% from -5%.
- Outgoing damage modifier changed to 0% from +5%.
- Shielding modifier changed to 0% from +20%.
Viego
- Outgoing damage modifier changed to -5% from 0%.
- Healing modifier changed to -20% from 0%.
Ulternate Summoner Spells
- Blitzcrank's Static Field
  - Bonus ability haste reduced to 10 from 35.
- Caitlyn's Ace in the Hole
  - Ability ratios increased to 100% from 80%.
- Dr. Mundo's Maximum Dosage
  - Bonus ability haste reduced to 20 from 35.
- Ekko's Chronobreak
  - Bonus ability haste reduced to 20 from 35.
- Gwen's Needlework
  - Ability ratios increased to 90% from 80%.
- Janna's Monsoon
  - Bonus ability haste reduced to 15 from 35.
- Nasus' Fury of the Sands
  - Bonus ability haste reduced to 10 from 25.
- Rell's Magnet Storm
  - Bonus ability haste reduced to 15 from 35.
- Syndra's Unleashed Power
  - Ability ratios increased to 90% from 80%.
- Vel'Koz's Life Form Disintegration Ray
  - Ability ratios increased to 90% from 80%.

V12.13

Visual Clarity
- The health bar icon displaying a player's selected UltBook Ulternate Summoner now changes based on the status of the ultimate.
- Attack-Smite users now receive an Attack-Smite Objective upon leaving the fountain to help inform players of the differences between normal Smite and Attack-Smite.
- Health Threshold indicator now appears on valid Attack-Smite targets displaying how low a monster’s health has to be for Attack-Smite to trigger.

Dragons
- All elemental rifts are now available.
Ulternate Summoner Spells
Number of available ultimates to choose from increased to 4 from 3.

The following ultimates will now grant 6 − 40 (based on level) adaptive force, bonus armor, and bonus magic resistance after the first time they are no longer on cooldown.
Bard's Tempered Fate

Janna's Monsoon

Kai'Sa's Killer Instinct

Poppy's Keeper's Verdict

Rell's Magnet Storm

Ryze's Realm Warp

Taliyah's Weaver's Wall

Xerath's Rite of the Arcane

Zoe's Portal Jump

The following ultimates have been added to the pool:
Annie's Summon: Tibbers

Gangplank's Cannon Barrage

Garen's Demacian Justice

Gnar's GNAR!

Kai'Sa's Killer Instinct

Neeko's Pop Blossom

Quinn's Behind Enemy Lines

Rakan's The Quickness

Renata Glasc's Hostile Takeover

Senna's Dawning Shadow

Syndra's Unleashed Power

Taliyah's Weaver's Wall

Tristana's Buster Shot

Varus' Chain of Corruption

Vel'Koz's Life Form Disintegration Ray

Xayah's Featherstorm

The following ultimates have been removed from the pool:
Olaf's Ragnarok

Rengar's Thrill of the Hunt

V11.24 - December 10th Hotfix

Bard
- Incoming damage modifier changed to -8% from -5%.
- Outgoing damage modifier changed to +8% from +5%.
Blitzcrank
- Incoming damage modifier changed to -5% from 0%.
- Outgoing damage modifier changed to +5% from 0%.
Brand
- Outgoing damage modifier changed to -5% from 0%.
Jax
- Incoming damage modifier changed to +5% from 0%.
- Outgoing damage modifier changed to -5% from 0%.
Rammus
- Incoming damage modifier changed to -5% from 0%.
- Outgoing damage modifier changed to +5% from 0%.
Sivir
- Incoming damage modifier changed to 0% from -5%.
- Outgoing damage modifier changed to 0% from +5%.
Vi
- Incoming damage modifier changed to -5% from 0%.
- Outgoing damage modifier changed to +5% from 0%.
Ulternate Summoner Spells
- Blitzcrank's Static Field
  - Ability ratios reduced to 60% from 80%.
- Mordekaiser's Realm of Death
  - Temporarily removed from the pool for Kled to investigate bugs.
- Nasus' Fury of the Sands
  - Bonus ability haste reduced to 25 from 35.
- Poppy's Keeper's Verdict
  - Bonus ability haste increased to 45 from 35.

V11.24

General
- Ultimate Spellbook now has Objective Bounties.
- Auto-Smite has been more aptly renamed Attack-Smite. The tooltip now also states that it has no cooldown.
- If you use a custom item set in Ultimate Spellbook that contains Emberknife or Hailblade, it will be replaced by Obsidian Edge.
Ulternate Summoner Spells
- The following ultimates have been added to the pool:
- The following ultimates have been removed from the pool:
  - Janna's Monsoon
  - Rell's Magnet Storm

V11.23 - November 19th Hotfix

Aphelios
- Outgoing damage modifier changed to -5% from 0%.
Elise
- Incoming damage modifier changed to -5% from 0%.
- Outgoing damage modifier changed to +5% from 0%.
Fiddlesticks
- Incoming damage modifier changed to -5% from 0%.
- Outgoing damage modifier changed to +5% from 0%.
Mordekaiser
- Incoming damage modifier changed to +5% from 0%.
Nidalee
- Incoming damage modifier changed to -5% from 0%.
- Outgoing damage modifier changed to +5% from 0%.
- Healing modifier changed +20% from 0%.
Nunu
- Incoming damage modifier changed to -5% from 0%.
- Outgoing damage modifier changed to +5% from 0%.
- Healing modifier changed +20% from 0%.
Rell
- Incoming damage modifier changed to +10% from +5%.
- Outgoing damage modifier changed to -5% from 0%.
Sett
- Incoming damage modifier changed to +5% from 0%.
- Outgoing damage modifier changed to -5% from 0%.
Thresh
- Incoming damage modifier changed to -5% from 0%.
- Outgoing damage modifier changed to +5% from 0%.
- Shielding modifier changed +20% from 0%.
Warwick
- Incoming damage modifier changed to -5% from 0%.
Wukong
- Incoming damage modifier changed to -5% from 0%.
Ulternate Summoner Spells
- Mordekaiser's Realm of Death
  - Bonus ability haste reduced to 15 from 35.
- Olaf's Ragnarok
  - Bonus ability haste reduced to 0 from 15.
- Vex's Shadow Surge
  - Bug Fix: Fixed a bug where taking Shadow Surge as an Ulternate Summoner Spell would sometimes cause issues for various champions.

V11.23

Ultimate Spellbook returns to live servers from November 18, 2021 (1:00 PM PT) to January 10, 2022 (11:59 PM PT).
User Interface
- Bug Fix: Clicking the "Confirm" button upon selecting an Ult-ernate Summoner Spell will now play an SFX.
Map
- Removed: No longer uses the Ruined Summoner's Rift map.
Dragons
Removed: No longer uses the Ruined Dragon. A dragon of only one type will spawn once every 3:30 minutes.
Dragon Slayer grants a buff that deals 0.5 / 1 / 1.5 / 2% (based on stacks) of target's maximum health magic damage once every second against turrets whenever you deal damage to them.

Slaying 4 ruined dragons grants the League of Legends Wiki:
Upon taking fatal damage, enter resurrection for 1.5 seconds, during which you are invulnerable, untargetable, and unable to act, and afterwards restore all of your health and take continuous internalraw damage (300 second cooldown).
Guardian Angel and Chronoshift will take priority over this effect. Zombie state effects will not.

New Effect: The first 2 dragons will now be random. The elemental rift will either be the Chemtech Rift or Hextech Rift and the final dragons will either be the Chemtech Drake or Hextech Drake.

New Effect: Slaying epic monsters now grants a buff that deals 0.3% maximum health magic damage once every second against turrets whenever you damage them.
Summoner spells
Junglers now have Auto-Smite instead of Placeholder Ult-ernate Summoner Spell in champion select. Auto-Smite gets replaced by the Ult-ernate that they select at the beginning of the game, granting a buff that is also called Auto-Smite.
Auto Smite: Causes damage dealt against Blue Sentinel, Red Brambleback, Rift Scuttler, or epic monsters while they are below 450 health to deal 450 bonus true damage.
Only affects the Blue Sentinel and Red Brambleback within the user's respective side of the jungle.

When Ivern takes Auto-Smite, he will not be able to use it to bypass Friend of the Forest's grove maturation timer. However, freeing a qualifying jungle camp will trigger Auto-Smite, granting him the heal and jungle starter item stack that a regular Smite would.
Items
Removed: Emberknife and Hailblade.

Obsidian Edge - New item
Replaces Emberknife and Hailblade.

Requires Placeholder and Auto-Smite to buy.

Cost: 350

Stats: 8% omnivamp against monsters

Unique Passive - Sear: Damaging monsters burns them for 60 (+ 30% AP) (+ 5% bonus AD) (+ 2% bonus health) magic damage over 5 seconds. Omnivamp against monsters provided by this item is not reduced by area of effect damage.

Unique Passive - Auto Path: Triggering Auto Smite 5 times consumes this item, granting all of the item's effects permanently as well as increasing the threshold and damage to 900.

Unique Passive - Huntsman: Killing large monsters grants 60 bonus experience. The first large monster killed grants an additional 150 bonus experience, for a total of 210. If you are at least 2 levels below the average level of the game, large monster kills grant 50 bonus experience per level below the average level of all players in the game. If your gold from minions is greater than 40% your gold from monsters, a lane minion will grant 13 less gold and 50% reduced experience. This penalty is removed at 20 minutes.

Recoup: Regenerate up to 8 − 18 (based on level) mana per second when in the jungle or river, based on missing mana.
Ulternate Summoner Spells
- Ashe's Enchanted Crystal Arrow
  - Bonus ability haste reduced to 20 from 35.
- Malphite's Unstoppable Force
  - Removed from the pool.
- The following ultimates have been added to the pool:

V11.15

Bard
- Outgoing damage modifier changed to +5% from 0%.
- Incoming damage modifier changed to -5% from 0%.
Jax
- Incoming damage modifier changed to +5% from 0%.
Trundle
- Incoming damage modifier changed to +5% from 0%.
Yuumi
- Healing modifier changed to -25% from -20%.
- Shielding modifier changed to -25% from -20%.
Ulternate Summoner Spells
- Ezreal's Trueshot Barrage
  - Ability ratios increased to 90% from 80%.
- Jhin's Curtain Call
  - Bonus ability haste increased to 45 from 35.
- Lux's Final Spark
  - Ability ratios increased to 90% from 80%.
- Malphite's Unstoppable Force
  - Added to the pool.
  - 0 bonus ability haste and 80% ratios.
- Miss Fortune's Bullet Time
  - Ability ratios increased to 100% from 80%.
- Olaf's Ragnarok
  - Bonus ability haste reduced to 0 from 10.
- Tryndamere's Undying Rage
  - Removed from the pool.
- Xerath's Rite of the Arcane
  - Ability ratios increased to 100% from 90%.
Stealth champions can now get stealth Ulternate Summoners offered to them.
Dragon Soul's revive now triggers after champion revives.
Bug Fix: Clones now properly copy health bar icons, including the Ulternate Summoner icon. This fix applies more broadly as well, e.g. Prototype: Omnistone now properly copy its icon over.
Bug Fix: First Blood gold now correctly matches the classic Summoner's Rift value (100 instead of 150).
Bug Fix: Announcement text for stealing a Ruined Dragon now correctly informs you it was the Ruined Dragon you stole.
Bug Fix: Volibear no longer sometimes spits out missiles from his Ulternate Summoner when trying to bite.
Matchmaking for the Ultimate Spellbook queue has been reseeded. Matches should now be with players of a more equal skill level. This change happened halfway through 11.14.

V11.14 - July 9th Hotfix

Ahri
- Incoming damage modifier changed to -5% from 0%.
Ashe
- Incoming damage modifier changed to -5% from 0%.
Fiora
- Outgoing damage modifier changed to -5% from 0%.
- Incoming damage modifier changed to +5% from 0%.
Graves
- Outgoing damage modifier changed to -5% from 0%.
Gwen
- Outgoing damage modifier changed to -5% from 0%.
- Incoming damage modifier changed to +5% from 0%.
Ivern
- Incoming damage modifier changed to -5% from 0%.
Jarvan IV
- Outgoing damage modifier changed to -5% from 0%.
Kindred
- Outgoing damage modifier changed to +5% from 0%.
- Incoming damage modifier changed to -5% from 0%.
Lillia
- Outgoing damage modifier changed to -5% from 0%.
Master Yi
- Outgoing damage modifier changed to 0% from -5%.
Miss Fortune
- Outgoing damage modifier changed to +5% from 0%.
- Incoming damage modifier changed to -5% from 0%.
Nasus
- Incoming damage modifier changed to -5% from 0%.
Neeko
- Incoming damage modifier changed to -5% from 0%.
Rell
- Incoming damage modifier changed to +5% from 0%.
Samira
- Outgoing damage modifier changed to -5% from 0%.
Singed
- Incoming damage modifier changed to +5% from 0%.
Sivir
- Outgoing damage modifier changed to +5% from 0%.
- Incoming damage modifier changed to -5% from 0%.
Xayah
- Incoming damage modifier changed to -5% from 0%.
Yuumi
- Outgoing damage modifier changed to -5% from 0%.
- Healing modifier changed to -20% from 0%.
- Shielding modifier changed to -20% from 0%.
Ulternate Summoner Spells
- Ahri's Spirit Rush
  - Ability ratios reduced to 60% from 80%.
- Cho'Gath's Feast
  - Slightly reduced chance of appearing.
- Lissandra's Frozen Tomb
  - Bonus ability haste reduced to 0 from 10.
  - Ability ratios reduced to 50% from 60%.
- Olaf's Ragnarok
  - Bonus ability haste reduced to 10 from 20.
  - Ability ratios reduced to 40% from 60%.
- Tryndamere's Undying Rage
  - Slightly reduced chance of appearing.
Bug Fix: Ruined Dragon Soul no longer sometimes kills you upon respawning.
Bug Fix: Ruined Dragon Soul no longer prevents various kinds of CCs from applying (e.g. no more walking around as an Anivia egg).
Bug Fix: Fixed a bug where certain abilities could collide with a targetable unit in the center of mid lane.
- Fiddlesticks' Bountiful Harvest can no longer always be used in the center of mid lane, just to cancel the channel if no other targets are nearby.
- Jhin's Dancing Grenade no longer sometimes fails to keep bouncing.
- Katarina's Bouncing Blade no longer sometimes fails to keep bouncing or drop a blade to interact with.
- Master Yi's Alpha Strike no longer sometimes fails to show the animation of bouncing.
- Samira's Flair no longer always uses the melee version if targeted at the center of mid lane.
- Shaco's Jack in the Box no longer gets triggered by and tries to shoot said unit if placed in the center of mid lane.

V11.14 - Added

Game mode available from July 8, 2021 (1:00 AM PT) to August 9, 2021 (11:59 PM PT).
Players each choose between 1 of 3 random ultimates from a pool of 41 to replace one of their summoner spells.
- Players cannot roll their own champion's ultimate.
Ult-ernate Summoner Spells default have 35 ability haste and scale with 80% of its regular ratios.

References

Game Modes

[1] PBE Bugs and Feedback Thread: Ultimate Spellbook

[2] Reinboom on Ultimate Weighing

[1]

[2]

Matchmade PVP	Classic ( Summoner's Rift 5v5) ARAM ( Howling Abyss 5v5) Teamfight Tactics ()
Custom	Classic ( 5v5 / 5v5) ARAM ( 5v5 / 5v5)
Co-op vs. AI	Classic ( 5v5)
Training	Tutorial () Practice Tool ()
Rotating Game Modes	Arena Ascension ( 5v5) Definitely Not Dominion ( 5vE) Dark Star: Singularity ( 3v3) Doom Bots ( 5vE) Hexakill ( 6v6 / 6v6) Hunt of the Blood Moon ( 5v5) Invasion ( 5vE) Legend of the Poro King () Nexus Blitz ( 5v5) Nexus Siege ( 5v5) Odyssey: Extraction ( 5vE) One for All ( 5v5 / 5v5) OVERCHARGE ( 3v3) Snow Battle ARURF ( 5v5) Snowdown Showdown ( 5v5) Ultimate Spellbook ( 5v5) Ultra Rapid Fire ( 5v5)
Draft types	All Random (ARAM / ARURF / Custom) Blind (Normal) Draft (Normal / Ranked / Custom) Tournament draft (Clash & Professional play) Majority Vote () Roulette Vote () Blind with bans () Draft with no bans (PBE)
Retired / Cancelled	All Random Summoner's Rift () Black Market Brawlers () Butcher's Bridge () Classic 3v3 () Classic 5v5 () Dominion () Hexakill () Nemesis Draft () Nexus Blitz () Showdown () Spirit Bonds Team Builder ()