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

Polyraptor | Creature | Dinosaur | Enrage — Whenever Polyraptor is dealt damage, create a token that's a copy of Polyraptor. | Mark Behm

Zacama, Primal Calamity | Legendary Creature | Elder Dinosaur | Vigilance, reach, trample When Zacama, Primal Calamity enters the battlefield, if you cast it, untap all lands you control. {2}{R}: Zacama deals 3 damage to target creature. {2}{G}: Destroy target artifact or enchantment. {2}{W}: You gain 3 life. | Jaime Jones