Ixalan

Ancient Brontodon | Creature | Dinosaur | | Jakub Kasper

Thundering Spineback | Creature | Dinosaur | Other Dinosaurs you control get +1/+1. {5}{G}: Create a 3/3 green Dinosaur creature token with trample. | Tomasz Jedruszek

Verdant Sun's Avatar | Creature | Dinosaur Avatar | Whenever Verdant Sun's Avatar or another creature enters the battlefield under your control, you gain life equal to that creature's toughness. | Izzy

Belligerent Brontodon | Creature | Dinosaur | Each creature you control assigns combat damage equal to its toughness rather than its power. | Dan Scott

Tishana, Voice of Thunder | Legendary Creature | Merfolk Shaman | Tishana, Voice of Thunder's power and toughness are each equal to the number of cards in your hand. You have no maximum hand size. When Tishana enters the battlefield, draw a card for each creature you control. | Anna Steinbauer

Gishath, Sun's Avatar | Legendary Creature | Dinosaur Avatar | Vigilance, trample, haste Whenever Gishath, Sun's Avatar deals combat damage to a player, reveal that many cards from the top of your library. Put any number of Dinosaur creature cards from among them onto the battlefield and the rest on the bottom of your library in a random order. | Zack Stella