Kalamax, the Stormsire
From Commander 2020 set
Kalamax, the Stormsire
Legendary Creature — Elemental Dinosaur
4/4
Whenever you cast your first instant spell each turn, if Kalamax is tapped, copy that spell. You may choose new targets for the copy.
Whenever you copy an instant spell, put a +1/+1 counter on Kalamax.