Ixalan

Snapping Sailback | Creature | Dinosaur | Flash Enrage — Whenever Snapping Sailback is dealt damage, put a +1/+1 counter on it. (It must survive the damage to get the counter.) | Dan Scott

Spike-Tailed Ceratops | Creature | Dinosaur | Spike-Tailed Ceratops can block an additional creature each combat. | Lius Lasahido

Raging Swordtooth | Creature | Dinosaur | Trample When Raging Swordtooth enters the battlefield, it deals 1 damage to each other creature. | Izzy

Regisaur Alpha | Creature | Dinosaur | Other Dinosaurs you control have haste. When Regisaur Alpha enters the battlefield, create a 3/3 green Dinosaur creature token with trample. | Jonathan Kuo