Team Avatar [Avatar: The Last Airbender]

Cost: 2 W Whenever a creature you control attacks alone, it gets X/ X until end of turn, where X is the number of creatures you control.
2 W , Discard this card: It deals damage equal to the number of creatures you control to target creature. Despite Sokka's best efforts, neither Boomeraang Squad nor Fearsome Foursome caught on.