Gempalm Polluter

Cycling {B}{B} ({B}{B}, Discard this card: Draw a card.)
When you cycle this card, you may have target player lose life equal to the number of Zombies on the battlefield.

Fanatical Offering

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards and create a Map token. (It's an artifact with "{1}, {T}, Sacrifice this token: Target creature you control explores. Activate only as a sorcery.")

Crypt Rats

{X}: This creature deals X damage to each creature and each player. Spend only black mana on X.

Vault of Whispers

Reckoner's Bargain

As an additional cost to cast this spell, sacrifice an artifact or creature.
You gain life equal to the sacrificed permanent's mana value. Draw two cards.

Carnophage

At the beginning of your upkeep, tap this creature unless you pay 1 life.

Cast Down

Embalmed Brawler

Amplify 1 (As this creature enters, put a +1/+1 counter on it for each Zombie card you reveal in your hand.)
Whenever this creature attacks or blocks, you lose 1 life for each +1/+1 counter on it.

Unexpected Fangs

Put a +1/+1 counter and a lifelink counter on target creature.

Shepherd of Rot

{T}: Each player loses 1 life for each Zombie on the battlefield.

Retrofitted Transmogrant

{3}{B}: Return this card from your graveyard to the battlefield tapped with two +1/+1 counters on it.

Defile

Target creature gets -1/-1 until end of turn for each Swamp you control.

Dark Ritual

Refurbished Familiar

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Flying
When this creature enters, each opponent discards a card. For each opponent who can't, you draw a card.

Vengeful Dead

Whenever this creature or another Zombie dies, each opponent loses 1 life.

Wail of the Nim

Choose one —
• Regenerate each creature you control.
• Wail of the Nim deals 1 damage to each creature and each player.
Entwine {B} (Choose both if you pay the entwine cost.)

Sangrophage

At the beginning of your upkeep, tap this creature unless you pay 2 life.

Crypt Incursion

Exile all creature cards from target player's graveyard. You gain 3 life for each card exiled this way.

Infernal Caretaker

Morph {3}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When this creature is turned face up, return all Zombie cards from all graveyards to their owners' hands.