Bel’akor, Demon Prince

Flying, Doublestrike, Trample
At the start of combat on your turn, create a
1/1 human creature token.
{b}{r} Sacrifice X Humans, This creature gets
+X/+0 and trample until the end of turn.
Whenever this creature attacks create X 1/1
human creature tokens tapped and attacking
where X is this creatures power.