Dinosaur Egg is a rare Creature — Dinosaur Egg card from The Lost Caverns of Ixalan Commander (LCC), collector number 92. Current market price: $0.52, TCGplayer market prices via Scryfall.
Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) When this creature dies, you may discover X, where X is its toughness.