Cresting Mosasaurus is a rare Creature — Dinosaur card from Jurassic World Collection (REX), collector number 2. Current market price: $5.79 (foil $6.45), TCGplayer market prices via Scryfall.
Emerge {6}{U} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.) When this creature enters, if you cast it, return each non-Dinosaur creature to its owner's hand.