Demonchanter

{1}{r/g}, Pay 1 life: Demonchanter gets +1/+0 and gains trample until end of turn.
{4}{b}{b}, {t}, Sacrifice Demonchanter: Create a 4/4 black Demon with flying.
He expects the demons to serve him. As a matter of fact, it's the other way around, and his first mission will be lunch.