Nothingness Sinkhole

Nothingness Sinkhole enters the battlefield
tapped with three stability counters on it.
{t}: Add {c}, then put stability counters on
Nothingness Sinkhole until it has at least three.
{w}{u}{b}{r}{g}, {t}: Remove a stability counter from
Nothingness Sinkhole. If Nothingness Sinkhole
has no stability counters on it, sacrifice it and
target player loses the game.