Doom Slayer

Haste, First Strike, Trample

Relentless: Whenever a creature an opponent controls dies, put a +1/+1 counter on Doom Slayer.

Demonbane — Doom Slayer has protection from Demons.

Unstoppable Wrath — If Doom Slayer would die, you may exile him instead. If you do, return him to the battlefield at the beginning of your next upkeep with a +1/+1 counter.