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Thunderlord's Decree

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Thunderlord's Decree is a tier 6 Cunning Keystone mastery.[1]



  • Deathfire Touch mastery 2016.png Deathfire Touch will apply more damage on a single single-target spell (i.e. over 4 seconds) than Thunderlord's Decree mastery 2016.png Thunderlord's Decree if a champion has more than 1146 AP or 573 bonus AD.

Patch History

  • Cooldown adjusted to 25 - 15 (based on level) seconds from 20 seconds.
  • Stack decay period reduced to 3 seconds from 5 seconds.
  • AD ratio increased to 30% AD from 20% AD.
  • Cooldown reduced to 20 seconds from 30 seconds.
V5.22 November 17th Hotfix
  • Fixed a bug where the per-target cooldown was unique across multiple champions with the mastery.
V5.22 Added
  • Tier 6 Cunning Keystone mastery with 1 rank.
    • Hitting an enemy champion with an ability (ability damage) or basic attack (on-hit) marks them with Thunderlord's Decree for 5 seconds. At 3 stacks, the target takes 10 - 180 (based on level) + (20% bonus AD) + (10% AP) magic damage. Thunderlord's Decree can only be triggered once every 30 seconds.


  1. Masteries on leagueoflegends.com

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