Gishath, Extinction's Avatar

Trample, dinosaur slayer (Whenever this creature assigns damage to a dinosaur, it deals double damage instead.)
Whenever Gishath, Extinction's Avatar deals
combat damage to a player, they put that many
cards from the top of their library into their graveyard. For each creature put in the graveyard
this way create a 4/4 Black Zombie Dinosaur
creature token with trample.