Creature — Elk Mutant
Watchful Radstag
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.) Whenever this creature evolves, create a token that's a copy of it.
From Magic: The Gathering.
Exact printings
Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o3y3d1oljpb1hq74ke6qj.