Raidhound Leader of Wolfes

Rather than pay {2} for each previous time you've cast this spell from the command zone this game,
pay {p/b} that many times.
Haste, Menace, Fear, Trample
Whenever creature you control deals combat damage to opponent or creature an opponent controls each opponent losses 1 life and you gain 1 life.
At beginning of your end step, exile Raidhound Leader of Wolfes then deal 1 damage to any target.