Utrom Scientists is a common Artifact Creature — Utrom Robot Scientist card from Teenage Mutant Ninja Turtles (TMT), collector number 56. Current market price: $0.06 (foil $0.10), TCGplayer market prices via Scryfall.
When this creature enters, tap up to one target creature and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)