Mordekaiser, the Oblivium

Trample, menace, hexproof

Whenever you sacrifice a creature, amass Specter 2. (Put two +1/+1 counter in a Specter Army you control. If you don't, create a Specter Army token colorless 0/0 fisrt.)

Whenever you attack, Drain 1 for each creature you sacrificed this turn. (Drain — deal 1 demage to your oponnent and gain 1 life.)