Marauding Raptor is a rare Creature — Dinosaur card from The List (PLST), collector number M20-150. Current market price: $0.85, TCGplayer market prices via Scryfall.
Creature spells you cast cost {1} less to cast. Whenever another creature you control enters, this creature deals 2 damage to it. If a Dinosaur is dealt damage this way, this creature gets +2/+0 until end of turn.