Xarendeath, God of Graveyards

Whenever a creature you control leaves the battlefield return to the battlefield
under your control at the beginning of your next upkeep
Whenever a creature you control enters the battlefield and it isn't the first time,
put a +1/+1 counter on Xarendeath, God of Graveyards
{t}{p/b}{p/b}{p/b} Sacrifice a creature