Starport Security is a common Artifact Creature — Robot Soldier card from Edge of Eternities (EOE), collector number 39. Current market price: $0.14 (foil $0.21), TCGplayer market prices via Scryfall.
{3}{W}, {T}: Tap another target creature. This ability costs {2} less to activate if you control a creature with a +1/+1 counter on it.