Dinosaurs are a creature type known for large bodies, expensive threats, and extensive green, red, and white typal support. Dinosaur decks commonly use ramp and cost reduction to get their prehistoric haymakers onto the battlefield ahead of schedule.
Marauding Raptor both reduces Dinosaur costs and damages creatures as they enter, conveniently triggering enrage abilities. Regisaur Alpha supplies haste, while Polyraptor can turn repeated damage into an entire Dino stampede.