Overrun is a uncommon Sorcery card from Magic 2012 (M12), collector number 186. Current market price: $0.28 (foil $0.81), TCGplayer market prices via Scryfall.
Creatures you control get +3/+3 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)