Nito, The First of the Dead

Deathtouch
At the beginning of your upkeep create two 1/1
black Skeleton tokens with wither. When you do
put a -1/-1 counter on each non-black creature,
then an opponent my sacrifice a creature, if they
do Nito, First of the Dead cannot attack that
player this turn.
{6}{b}{b}{b}: Return Nito, the First of the Dead
from your graveyard to the battlefield.