Enchant creature card in a graveyard

When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it.

Enchanted creature gets -1/-0.

Sacrifice a creature: Add {C}{C}.

{B}, Sacrifice a creature: Destroy target nonblack creature.

Bojuka Bog enters the battlefield tapped.

When Bojuka Bog enters the battlefield, exile target player's graveyard.

{T}: Add {B}.

As an additional cost to cast this spell, sacrifice a creature.

Destroy target creature.

Search your library for up to three creature cards, put them into your graveyard, then shuffle.

Other Zombie creatures you control get +1/+1.

{2}{B}, {T}: Exile target creature card from a graveyard. Create a 2/2 black Zombie creature token.

Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it. (For example, if two Goblin Warriors and a Goblin Shaman are on the battlefield, each gets +2/+2.)

When Corpse Augur dies, you draw X cards and you lose X life, where X is the number of creature cards in target player's graveyard.

When Corpse Connoisseur enters the battlefield, you may search your library for a creature card, put that card into your graveyard, then shuffle.

Unearth {3}{B} ({3}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

{1}{B}, {T}, Sacrifice a creature: Search your library for a Zombie card and a Swamp card, reveal them, put them into your hand, then shuffle.

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Whenever you tap a Swamp for mana, add an additional {B}.

Crypt of Agadeem enters the battlefield tapped.

{T}: Add {B}.

{2}, {T}: Add {B} for each black creature card in your graveyard.

{1}{B}, {T}, Discard a card: Create a 2/2 black Zombie creature token.

Tap three untapped Zombies you control: You draw a card and you lose 1 life.

When Custodi Lich enters the battlefield, you become the monarch.

Whenever you become the monarch, target player sacrifices a creature.

Return target nonland permanent you don't control to its owner's hand.

Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

{1}, {T}: Add {U}{B}.

Deathtouch

Other Zombie creatures you control get +1/+1.

Whenever another Zombie you control dies, target opponent loses 1 life.

Diregraf Colossus enters the battlefield with a +1/+1 counter on it for each Zombie card in your graveyard.

Whenever you cast a Zombie spell, create a tapped 2/2 black Zombie creature token.

When Disciple of Bolas enters the battlefield, sacrifice another creature. You gain X life and draw X cards, where X is that creature's power.

As Door of Destinies enters the battlefield, choose a creature type.

Whenever you cast a spell of the chosen type, put a charge counter on Door of Destinies.

Creatures you control of the chosen type get +1/+1 for each charge counter on Door of Destinies.

Each player mills X cards. For each creature card put into a graveyard this way, you create a tapped 2/2 black Zombie creature token.

At the beginning of your upkeep, create X 2/2 black Zombie creature tokens, where X is half the number of Zombies you control, rounded down.

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

{T}: Add one mana of any color that a land an opponent controls could produce.

When Fleshbag Marauder enters the battlefield, each player sacrifices a creature.

Look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard.

Flashback {6}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Skulk (This creature can't be blocked by creatures with greater power.)

At the beginning of your upkeep, you may discard all the cards in your hand. If you do, draw that many cards.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

{X}{B}: Put target artifact or creature card with mana value X from an opponent's graveyard onto the battlefield under your control tapped. Then that player mills X cards.

When Gisa and Geralf enters the battlefield, mill four cards.

Once during each of your turns, you may cast a Zombie creature spell from your graveyard.

Zombies you control have menace. (They can't be blocked except by two or more creatures.)

{3}{B}, Exile a creature card from your graveyard: Create a 2/2 black Zombie creature token.

When Grave Defiler enters the battlefield, 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.

Deathtouch

Whenever Grave Titan enters the battlefield or attacks, create two 2/2 black Zombie creature tokens.

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

Gravecrawler can't block.

You may cast Gravecrawler from your graveyard as long as you control a Zombie.

When Gray Merchant of Asphodel enters the battlefield, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

{B}, Pay 2 life: Draw a card.

Grimgrin, Corpse-Born enters the battlefield tapped and doesn't untap during your untap step.

Sacrifice another creature: Untap Grimgrin and put a +1/+1 counter on it.

Whenever Grimgrin attacks, destroy target creature defending player controls, then put a +1/+1 counter on Grimgrin.

{1}: You may cast target creature card in a graveyard this turn. When you cast it this turn, Havengul Lich gains all activated abilities of that card until end of turn.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

Deathtouch

Whenever Liliana's Reaver deals combat damage to a player, that player discards a card and you create a tapped 2/2 black Zombie creature token.

Each player exiles all creature cards from their graveyard, then sacrifices all creatures they control, then puts all cards they exiled this way onto the battlefield.

Other Zombie creatures get +1/+1.

{1}{B}, {T}: Return target Zombie card from your graveyard to your hand.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever a Human deals damage to you, destroy it.

Other non-Human creatures you control get +1/+1 and have undying. (When a creature with undying 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.)

{T}: Add {C}.

{1}, {T}, Sacrifice Mind Stone: Draw a card.

As an additional cost to cast this spell, sacrifice an artifact or creature.

Draw cards equal to the mana value of the sacrificed permanent.

{1}{B}, Discard a creature card: Draw a card. If the discarded card was a Zombie card, create a tapped 2/2 black Zombie creature token.

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

{T}: Add {C}.

{2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)

As Obelisk of Urd enters the battlefield, choose a creature type.

Creatures you control of the chosen type get +2/+2.

At the beginning of your upkeep, if you have four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand.

Each player chooses a creature type. Each player returns all creature cards of a type chosen this way from their graveyard to the battlefield.

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

When Phyrexian Delver enters the battlefield, return target creature card from your graveyard to the battlefield. You lose life equal to that card's mana value.

Whenever a creature enters the battlefield, if it entered from your graveyard or you cast it from your graveyard, return Prized Amalgam from your graveyard to the battlefield tapped at the beginning of the next end step.

Put all creature cards from all graveyards onto the battlefield under your control.

You may pay {0} rather than pay the mana cost for Zombie creature spells you cast.

Flying

You may cast Scourge of Nel Toth from your graveyard by paying {B}{B} and sacrificing two creatures rather than paying its mana cost.

Whenever you cast a spell from your graveyard, draw a card.

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

Deathtouch

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Sidisi, Undead Vizier exploits a creature, you may search your library for a card, put it into your hand, then shuffle.

When Skinrender enters the battlefield, put three -1/-1 counters on target creature.

Equipped creature gets +1/-1.

Whenever equipped creature dies, draw two cards.

Equip {1}

{T}: Add {C}{C}.

{2}{U}, {T}: Each player mills three cards. Exile up to two creature cards put into graveyards this way. Create an X/X blue Zombie creature token, where X is the total power of the cards exiled this way.

{T}, Sacrifice a creature: Destroy target nonblack creature.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

{T}: Add {C}.

{T}: Add {U} or {B}. Activate only if you control a Swamp.

{T}: Add {C}{C}{C}.

Cumulative upkeep {1}{B} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

At the beginning of each upkeep, if Tombstone Stairwell is on the battlefield, each player creates a 2/2 black Zombie creature token with haste named Tombspawn for each creature card in their graveyard.

At the beginning of each end step or when Tombstone Stairwell leaves the battlefield, destroy all tokens created with Tombstone Stairwell. They can't be regenerated.

Target creature gets -1/-1 until end of turn.

Morbid -- That creature gets -13/-13 until end of turn instead if a creature died this turn.

Unbreathing Horde enters the battlefield with a +1/+1 counter on it for each other Zombie you control and each Zombie card in your graveyard.

If Unbreathing Horde would be dealt damage, prevent that damage and remove a +1/+1 counter from it.

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

Zombie creatures you control get +2/+1.

{T}: Add {C}.

{B}, {T}: Put target Zombie card from your graveyard on top of your library.

As Urza's Incubator enters the battlefield, choose a creature type.

Creature spells of the chosen type cost {2} less to cast.

Whenever Vengeful Dead or another Zombie dies, each opponent loses 1 life.

Choose two target creature cards in your graveyard. Sacrifice a creature. If you do, return the chosen cards to the battlefield tapped.

Cast this spell only during combat on an opponent's turn.

Return X target creature cards from your graveyard to the battlefield. Sacrifice those creatures at the beginning of the next end step.

Return all Zombie creature cards from your graveyard to the battlefield tapped, then destroy all Humans.

Other Zombie creatures have swampwalk. (They can't be blocked as long as defending player controls a Swamp.)

Other Zombies have "{B}: Regenerate this permanent."