Dark Ritual

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Grave Defiler

When Grave Defiler enters, reveal the top four cards of your library. Put all Zombie cards revealed this way into your hand and the rest on the bottom of your library in any order.
{1}{B}: Regenerate Grave Defiler.

Dry Spell

Dry Spell deals 1 damage to each creature and each player.

Vicious Hunger

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

Undead Gladiator

{1}{B}, Discard a card: Return Undead Gladiator from your graveyard to your hand. Activate only during your upkeep.
Cycling {1}{B} ({1}{B}, Discard this card: Draw a card.)

Bad Moon

Organ Grinder

{T}, Exile three cards from your graveyard: Target player loses 3 life.

Undead Warchief

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

Vampiric Tutor

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Rend Flesh

Ancient Tomb

{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.

Noxious Ghoul

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

Gempalm Polluter

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

Carnophage

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

Wretched Anurid

Whenever another creature enters, you lose 1 life.

Phyrexian Arena

At the beginning of your upkeep, you draw a card and you lose 1 life.

Imperial Seal

Withered Wretch

Festering Goblin

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