"I don't know whether it hates the mycoids or just loves breaking things. I say we leave it be."
—Samin, Oltec scout

The Lost Caverns of Ixalan Promos

Pugnacious Hammerskull

Whenever Pugnacious Hammerskull attacks while you don't control another Dinosaur, put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

The Lost Caverns of Ixalan

Whenever Pugnacious Hammerskull attacks while you don't control another Dinosaur, put a stun counter on it.