Rakdos, Herald of Carnage

Flying, Trample, Deathtouch
At the beginning of each player's combat phase,
that player may goad each creature they control.
If they don't, that player looses half their life,
rounded up.
At the beginning of each end step, you draw
X cards and loose X life, where X is the highest
amount of damage an opponent was dealt this
turn by a goaded creature