Stagecoach Security is a common Creature — Human Soldier card from Outlaws of Thunder Junction (OTJ), collector number 30. Current market price: $0.08 (foil $0.09), TCGplayer market prices via Scryfall.
When this creature enters, creatures you control get +1/+1 and gain vigilance until end of turn. Plot {3}{W} (You may pay {3}{W} and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)