Swamp

Undead Warchief

Zombie spells you cast cost {1} less to cast.
Zombie creatures you control get +2/+1.

Call to the Grave

At the beginning of each player's upkeep, that player sacrifices a non-Zombie creature of their choice.
At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment.

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Midnight Ritual

Exile X target creature cards from your graveyard. For each creature card exiled this way, create a 2/2 black Zombie creature token.

Festering Goblin

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

Crypt Creeper

Sacrifice this creature: Exile target card from a graveyard.

Lord of the Undead

Other Zombie creatures get +1/+1.
{1}{B}, {T}: Return target Zombie card from your graveyard to your hand.

Mishra's Factory

{T}: Add {C}.
{1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Phyrexian Tower

{T}: Add {C}.
{T}, Sacrifice a creature: Add {B}{B}.

Nevinyrral's Disk

This artifact enters tapped.
{1}, {T}: Destroy all artifacts, creatures, and enchantments.

Vendetta

Destroy target nonblack creature. It can't be regenerated. You lose life equal to that creature's toughness.

Carrion Feeder

This creature can't block.
Sacrifice a creature: Put a +1/+1 counter on this creature.

Graveborn Muse

At the beginning of your upkeep, you draw X cards and you lose X life, where X is the number of Zombies you control.

Weakness

Enchant creature
Enchanted creature gets -2/-1.

Bad Moon

Vicious Hunger

Vicious Hunger deals 2 damage to target creature and you gain 2 life.

Smother

Destroy target creature with mana value 3 or less. It can't be regenerated.

Jet Medallion

Black spells you cast cost {1} less to cast.

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.