Feast of a Thousand Souls

Cumulative Upkeep {2}
All 1/1 creatures have decayed.
At the beginning of each players upkeep all
creatures on the battlefield gain a -1/-1 counter,
for each creature that dies create blood tokens
equal to their base toughness.
{p/b}{p/b}{b}: Sacrifice three blood tokens, return
target creature from your graveyard to your
hand.