When this creature dies, target creature gets -1/-1 until end of turn.

When this creature dies, you may put a -1/-1 counter on target creature.

Flying Threshold — As long as seven or more cards are in your graveyard, this creature has "When this creature enters, nonblack creatures get -2/-2 until end of turn."

When this creature dies, target creature an opponent controls gets -1/-1 until end of turn.

Whenever this creature attacks, up to five target creatures each get -1/-1 until end of turn.

Whenever this creature or another Zombie enters, all non-Zombie creatures get -1/-1 until end of turn.

When this creature dies, target creature an opponent controls gets -1/-1 until end of turn.

Exploit (When this creature enters, you may sacrifice a creature.) When this creature exploits a creature, target creature gets -3/-3 until end of turn.

When this creature enters, put three -1/-1 counters on target creature.

This creature enters with X +1/+1 counters on it, where X is the number of creature cards in all graveyards. {2}{B}, Remove a +1/+1 counter from this creature: Target creature gets -1/-1 until end of turn.

When this creature enters, target creature gets -2/-2 until end of turn.

{2}{B}, Sacrifice this creature: Target creature gets -1/-1 until end of turn.

When this creature dies, all creatures get -1/-1 until end of turn. {2}, Sacrifice this creature: Draw a card.

Whenever this creature becomes blocked, each creature blocking it gets -1/-1 until end of turn.

When this creature enters, green creatures get -1/-1 until end of turn.

{7}{B}: Target creature gets -3/-3 until end of turn.