Whenever Jayce attacks or blocks, put a +1/+1 counter on target creature you control. Whenever you cast an instant or sorcery spell, you may destroy target artifact or enchantment.
Overload

(You may cast this spell for its overload cost. If you do, change its text by replacing all instances of “target” with “each.”)
"Picking a fight with me is the dumbest thing you've done today – and that's saying a lot."