Runes Reforged

Starting with Pre-Season 2018, Runes and Masteries are replaced with a new system called Runes Reforged.

The system allows players to customize their champion before the start of the game by choosing from a number of Runes, which add or enhance champion abilities and statistics.

The player picks a Keystone Rune and five Secondary Runes that are then combined into a Rune Page. Each Rune has a significant effect, with Keystone Runes being more powerful (see below for a detailed description). The active Rune Page may be changed before each match; pages can be edited freely outside of matches.

It is not possible to enter a match without an active, valid rune page. The game will provide a pre-constructed page for the player if the selected rune page is not valid.

Lore
In his youth, thousands of years ago, witnessed the discovery of the first World Rune, as well as many more in the decades that followed. Believed to be a font of The Makers's might, conflict soon erupted over their control. This conflict escalated into the great Rune Wars, which erased Ryze's boyhood village of Khom, Shurima, from reality.

Sobered by the threat of annihilation, Ryze and his mentor manage to convince many of the World Rune's holders into sealing their World Runes beyond the reach of man. But many refused. After the death of his mentor, it fell to Ryze to continue the quest with only an ancient scroll for guidance.

Forward to the present day, the World Runes have begun to emerge once more, and the world has forgotten the price of wielding them.

Overview
Summoners may choose two Paths: one Primary and one Secondary. You may not pick the same path twice. There are five paths to choose from:
 * Precision icon.png Precision (Improved attacks and sustained damage)
 * Domination icon.png Domination (Burst damage and target access)
 * Sorcery icon.png Sorcery (Empowered abilities and resource manipulation)
 * Resolve icon.png Resolve (Durability and crowd control)
 * Inspiration icon.png Inspiration (Creative tools and rule bending)

The Primary Path has one Keystone slot and 3 Lesser slots, while the the Secondary Path has a choice of 2 of the 3 Lesser slots. Each individual slot provides a unique selection of runes, similar to the branches of the former Mastery trees. You also gain an additional bonus based on the combination of your paths, referred to as a Set Bonus or Trait.

Set Bonuses
The Set Bonus is an additional passive based on the combination of your chosen paths, although not all combinations have distinct effects. The set's Title is currently only used within the in-game client, with the passive being unnamed when viewed within the out-of-game Rune Inventory.

Substitutions
The following substitutions will automatically be made where applicable:
 * On modes without the river, is exchanged with.
 * On modes where wards are disabled, is exchanged with.
 * On modes without minions, is exchanged with.
 * On modes without structures or structures are impervious, is exchanged with.
 * On champions without mana or energy, is exchanged with.
 * On champions without mana, is exchanged with.
 * On champions without immobilizing effects, is exchanged with.
 * On :
 * is exchanged with.
 * is exchanged with.
 * On and,  is exchanged with.
 * On Ascension, is exchanged with.
 * On ARURF:
 * is exchanged with.
 * is exchanged with.
 * is exchanged with.
 * is exchanged with.
 * is exchanged with.
 * is exchanged with.
 * is exchanged with.
 * This list may be incomplete.

These substitutions are noted in chat when the game starts.

Rune Pages
All accounts have access to 5 Preset Pages from level 1 that cannot be edited. Players can begin creating/editing rune pages at summoner level 11, but are limited to only editing the keystone rune. Starting at level 13 they can edit their primary rune path and at level 15 they unlock the secondary path aswell and can therefore customize the full rune page. The ability to hide Preset Pages was added in V7.23.

As with the previous system, accounts begin with 2 slots for personalized rune pages and may purchase the of additional pages in the store for  or. Any Rune Pages the player owned in the previous system were transferred across to the new system, in addition to the compensation received.

In the former system there was a limit of maximum 20 rune pages per account, but this is no longer true. The current limit is 25 Rune Pages as of Patch V7.22. The presets are not counted toward the limit.


 * Presets and Example

Compensation for legacy Rune purchases
Note that and  are being merged into a single currency in Season 2018.

Players who bought any legacy Runes or Rune Pages in the retired system receive a compensation according to the following table. This is only relevant for accounts created before the introduction of Runes Reforged in fall 2017.

To spend all that compensation on, there has been a substantial Blue Essence Sale as part of the End of Season Event.

Trivia

 * During development, Precision and Sorcery were originally going to be Primary-only.
 * Runes and their surrounding areas have distinct visual appearances similar to Runeterran factions, which may be intentional and reflect the real-world location of the World Runes:
 * Precision icon.png Precision - Golden cityscape of Demacia_Crest_icon.png Demacia or Shurima Crest icon.png Shurima
 * Domination icon.png Domination - Noxus_Crest_icon.png Noxian fortification
 * Sorcery icon.png Sorcery - Mountains of Freljord_Crest_icon.png The Freljord, Mount_Targon_Crest_icon.png Mount Targon or Void_Crest_icon.png Icathia
 * Resolve icon.png Resolve - Riverlands of Demacia_Crest_icon.png Demacia, Ionia_Crest_icon.png Ionia or Freljord_Crest_icon.png southern Freljord
 * Inspiration icon.png Inspiration - Beneath the heavens atop Mount_Targon_Crest_icon.png Mount Targon
 * The following statements generalize the changes made to compensate the loss of AD from Marks and Health/Armor from Seals, which were almost unanimously used due to the lack of options (and thus the game has been balanced, for example, around most champions having +9 Armor from Seals). The exact values may vary for specific cases, as Riot also took this opportunity to better distinguish classes (e.g. tanks from non-tanks; ranged from melee), as well as buff/nerf specific champions.
 * AD champions had the base damage on their abilities increased by 5.
 * Ranged AD champions also had their increased by 8.
 * Most champions had their increased by 9.
 * Most mages had their increased by 12 (+12), instead. Primarily excepting junglers.
 * Melee supports had their increased by 20, instead.
 * Every rune that gives bonus Adaptive AD or AP, will always grant about 60% of the amount of AP as AD, or about % of the amount of AD as AP.
 * Riot has stated that they already have a number of additional runes in the works that will not be finished before the initial release.
 * Players may also see additional paths in the future, although none are currently in development and they would not be added outside of the mid- or pre-season patch.
 * There are 48600 possible rune combinations, factoring that:
 * There are possible combinations of the 5 Rune Paths, of which 8 are with Resolve.
 * There are 81 possible combinations of primary runes, other than Resolve with 108.
 * There are 27 possible combinations of secondary runes, other than Resolve with 33.
 * Full math: 8127128133410827448600

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