Calculating Lich

Menace
Whenever a creature attacks one of your opponents, that player loses 1 life.

Nefashu

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

Diregraf Horde

When Diregraf Horde enters, create two 2/2 black Zombie creature tokens with decayed. When you do, exile up to two target cards from graveyards. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)

Diregraf Ghoul

Farbog Boneflinger

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

Cursed Minotaur

Menace (This creature can't be blocked except by two or more creatures.)

Carrion Howler

Pay 1 life: Carrion Howler gets +2/-1 until end of turn.

Swamp

Custodi Lich

When Custodi Lich enters, you become the monarch.
Whenever you become the monarch, target player sacrifices a creature of their choice.

Abattoir Ghoul

First strike
Whenever a creature dealt damage by Abattoir Ghoul this turn dies, you gain life equal to that creature's toughness.

Gutter Skulk

Accursed Centaur

When Accursed Centaur enters, sacrifice a creature.

Dread Slaver

Whenever a creature dealt damage by Dread Slaver this turn dies, return it to the battlefield under your control. That creature is a black Zombie in addition to its other colors and types.

Crow of Dark Tidings

Flying
When this creature enters or dies, mill two cards. (Put the top two cards of your library into your graveyard.)

Archghoul of Thraben

Whenever Archghoul of Thraben or another Zombie you control dies, look at the top card of your library. If it's a Zombie card, you may reveal it and put it into your hand. If you don't put the card into your hand, you may put it into your graveyard.

Shambling Goblin

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

Festering Goblin

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

Cackling Fiend

When Cackling Fiend enters, each opponent discards a card.

Death Baron

Skeletons you control and other Zombies you control get +1/+1 and have deathtouch. (Any amount of damage they deal to a creature is enough to destroy it.)

Blood Scrivener

If you would draw a card while you have no cards in hand, instead you draw two cards and you lose 1 life.

Black Cat

When Black Cat dies, target opponent discards a card at random.

Khenra Eternal

Afflict 1 (Whenever this creature becomes blocked, defending player loses 1 life.)