Rivals of Ixalan

Zetalpa, Primal Dawn | Legendary Creature | Elder Dinosaur | Flying, double strike, vigilance, trample, indestructible | Chris Rallis

Nezahal, Primal Tide | Legendary Creature | Elder Dinosaur | This spell can't be countered. You have no maximum hand size. Whenever an opponent casts a noncreature spell, draw a card. Discard three cards: Exile Nezahal, Primal Tide. Return it to the battlefield tapped under its owner's control at the beginning of the next end step. | Sam Burley

Silverclad Ferocidons | Creature | Dinosaur | Enrage — Whenever Silverclad Ferocidons is dealt damage, each opponent sacrifices a permanent. | Simon Dominic

Ghalta, Primal Hunger | Legendary Creature | Elder Dinosaur | This spell costs {X} less to cast, where X is the total power of creatures you control. Trample | Chase Stone