Shipwreck Patrol is a common Creature — Merfolk Warrior card from Marvel Super Heroes Commander (MSC), collector number 638. Current market price: $0.21 (foil $0.28), TCGplayer market prices via Scryfall.
When this creature enters, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)