Kled, The Cavalier

Double strike
{r}{r}: Kled, The Cavalier gains +X/+0, where X is the number of attacking knight creatures you control until end of turn.
Bloodrush - {r/w}{w}{r}, Discard Kled, The Cavalier: Target attacking creature gets +X/+X until end of turn, where X is the number of
attacking creatures you control.