30 seconds for a meh burst is pretty well... meh, cuz compared to Deathfire Torch, this one is lackluster.
I have 2 suggestions for the Thunderlords Decree mastery:
How about making the CD per enemy champ? Similar to Ekko's or Jarvan's passive for example, where a champion can't be hit by the ability for a certain amount of time.
OR decrease the CD per AA (like Nocturne's Passive)
What's your opinion?