Obzeneb, of Hell

Flying, Trample, Haste
At the beginning of your upkeep put a demise
counter on Obzeneb and choose one - lose 2 life; discard a card; or sacrifice a creature
{r}{r}{r}: Obzeneb gets +X+X until end of turn,
where X is the number of demise counters on it
{b}{b}{b}{t}: Target player sacrifices a creature
for each demise counter on Obzeneb