If you damage an enemy champion or structure 3 times every 30 seconds, Tribute grants 20 per 10.
Plus 2 per 10 from the item, you can receive a total of 22 per 10.
Upgrading Timeworn Frostfang to Timeworn Frost Queen's Claim does not improve its ability to generate gold, other than by removing the passive disable when killing minions.
The upgrade from Timeworn Frostfang costs 1350 and grants 1061 worth of AP and CDR. For the upgrade to be worth it, the active and the removal of the passive disabling when killing minions, must be worth 289. If the active gains or denies one kill, the upgrade was worth it.
Brand'sBlaze's explosion can create a chain reaction that can trigger the passive multiple times.
Stats: +2 per 10 seconds, +60 ability power, +10% cooldown reduction, +50% base mana regeneration.
Unique Passive - Tribute: Grants a charge every 10 seconds, up to 3 charges. Damaging spells and attacks against champions and buildings consume a charge, up to one per attack or cast. Consuming a charge deals them 18 bonus magic damage and grants 15.
Unique Passive - Quest: Earn 750 using this item. Reward:Tribute is upgraded to Queen's Tribute, giving you 50% bonus movement speed for 1 second (additional stacks extend duration) for each charge consumed.
Unique Active: Summon 2 icy ghosts for 6 seconds that seek out nearby enemy champions (4500 range). Ghosts reveal enemies on contact and slow them by 40% for 2 - 5 seconds (90 second cooldown).