Talk:New Form on the Horizon Goku (Ultra Instinct -Sign-)/@comment-24594221-20180306210725/@comment-4199482-20180309143527

They can easily do that "resting" mechanic by tying it in to HP. So he's uber strong until you drop below like 20-30% HP where his ATK stats drop significantly or even to 0 for 3 turns. That would be close enough to the thing you mentioned without having to add too much stuff.