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This article or section may contain obsolete information, but exists here for historical purposes.

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


  • Thunderlord's Decree's cooldown is general (not per-target)


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

Patch History

  • Cooldown changed to 25 − 15 (based on level) seconds from 20 at all levels.
  • Stack duration reduced to 3 seconds from 5 seconds.
  • AD ratio increased to 30% bonus AD from 20% bonus AD.
  • Cooldown reduced to 20 seconds from 30.
November 17th Hotfix
  • Bug Fix: Fixed a bug where the per-target cooldown was unique across multiple champions with the mastery.
  • 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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