Cauldron of Souls

: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner’s control with a -1/-1 counter on it.)

Cauldron of Souls

: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner’s control with a -1/-1 counter on it.)

Cauldron of Souls

: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner’s control with a -1/-1 counter on it.)

Fang Skulkin

: Target black creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)

Leering Emblem

Whenever you cast a spell, equipped creature gets +2/+2 until end of turn.
Equip

Sinking Feeling

Enchant creature
Enchanted creature doesn’t untap during its controller’s untap step.
Enchanted creature has “, Put a -1/-1 counter on this creature: Untap this creature.”

Tatterkite

Flying
Tatterkite can’t have counters put on it.

Cauldron of Souls

: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner’s control with a -1/-1 counter on it.)