Beckett Mariner, Impetuous Ensign is a uncommon Legendary Creature — Human Officer card from Star Trek (TRK), collector number 138. Current market price: $2.94, TCGplayer market prices via Scryfall.
First strike Reckless Behavior — Whenever Beckett Mariner becomes tapped, put a promotion counter on her. Then if there are three or more promotion counters on her, remove those counters and she deals 2 damage to each opponent.