Cumulative Skaab

Cumulative Skaab can't be the target of
spells or abilities you control.
When Cumluative Skaab dies, put an X/X
black zombie creature token onto the
battlefield where X is the number of
creatures that died this turn. Sacrifice it at
the beginning of the next upkeep, then, if
you pay {w/b}, return Cumulative Skaab from
your Graveyard to the battlefield.