Looming Shade

{B}: Looming Shade gets +1/+1 until end of turn.

Drudge Skeletons

{B}: Regenerate Drudge Skeletons. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Feral Shadow

Hell's Caretaker

{T}, Sacrifice a creature: Return target creature card from your graveyard to the battlefield. Activate only during your upkeep.

Ambition's Cost

You draw three cards and you lose 3 life.

Crypt Rats

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

Reprocess

Sacrifice any number of artifacts, creatures, and/or lands. Draw a card for each permanent sacrificed this way.

Bad Moon

Bone Harvest

Put any number of target creature cards from your graveyard on top of your library.
Draw a card at the beginning of the next turn's upkeep.

Cosmic Horror

First strike
At the beginning of your upkeep, destroy Cosmic Horror unless you pay {3}{B}{B}{B}. If Cosmic Horror is destroyed this way, it deals 7 damage to you.

Gravedigger

When Gravedigger enters, you may return target creature card from your graveyard to your hand.

Bottle Gnomes

Sacrifice Bottle Gnomes: You gain 3 life.

Diabolic Tutor

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

Lord of the Pit

Flying, trample
At the beginning of your upkeep, sacrifice a creature other than Lord of the Pit. If you can't, Lord of the Pit deals 7 damage to you.

Fallen Angel

Flying
Sacrifice a creature: Fallen Angel gets +2/+1 until end of turn.

Deathgazer

Whenever Deathgazer blocks or becomes blocked by a nonblack creature, destroy that creature at end of combat.

Living Death

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.

Dusk Imp

Blighted Shaman

{T}, Sacrifice a Swamp: Target creature gets +1/+1 until end of turn.
{T}, Sacrifice a creature: Target creature gets +2/+2 until end of turn.

Gluttonous Zombie

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Death Pit Offering

When Death Pit Offering enters, sacrifice all creatures you control.
Creatures you control get +2/+2.

Stronghold Assassin

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

Carrion Ants

{1}: Carrion Ants gets +1/+1 until end of turn.

Swamp

Charcoal Diamond

Charcoal Diamond enters tapped.
{T}: Add {B}.

Phyrexian Ghoul

Sacrifice a creature: Phyrexian Ghoul gets +2/+2 until end of turn.

Raise Dead

Return target creature card from your graveyard to your hand.

Dark Banishing

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

Frozen Shade

{B}: Frozen Shade gets +1/+1 until end of turn.

Bog Imp

Flying (This creature can't be blocked except by creatures with flying or reach.)

Revenant

Flying
Revenant's power and toughness are each equal to the number of creature cards in your graveyard.

Foul Imp

Flying
When Foul Imp enters, you lose 2 life.

Hand of Death

Aesthir Glider

Bog Wraith

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Dakmor Ghoul

When Dakmor Ghoul enters, target opponent loses 2 life and you gain 2 life.

Deepwood Ghoul

Ancient Craving

Black Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from white (This creature can't be blocked, targeted, dealt damage, or enchanted by anything white.)

Ihsan's Shade

Knight of Stromgald

Protection from white
{B}: Knight of Stromgald gains first strike until end of turn.
{B}{B}: Knight of Stromgald gets +1/+0 until end of turn.

Nightmare

Flying (This creature can't be blocked except by creatures with flying or reach.)
Nightmare's power and toughness are each equal to the number of Swamps you control.

Abomination

Whenever Abomination blocks or becomes blocked by a green or white creature, destroy that creature at end of combat.

Dakmor Lancer

When Dakmor Lancer enters, destroy target nonblack creature.

Bog Rats

Blood Pet

Lim-Dûl's High Guard

First strike
{1}{B}: Regenerate Lim-Dûl's High Guard.

Highway Robber

When Highway Robber enters, target opponent loses 2 life and you gain 2 life.

Terror

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

Mortivore

Mortivore's power and toughness are each equal to the number of creature cards in all graveyards.
{B}: Regenerate Mortivore. (The next time this creature would be destroyed, instead tap it, remove it from combat, and heal all damage on it.)

Kjeldoran Dead

When Kjeldoran Dead enters, sacrifice a creature.
{B}: Regenerate Kjeldoran Dead.

Beast of Burden

Beast of Burden's power and toughness are each equal to the number of creatures on the battlefield.

Dakmor Sorceress

Dakmor Sorceress's power is equal to the number of Swamps you control.

Exhume

Each player puts a creature card from their graveyard onto the battlefield.

Zombify

Return target creature card from your graveyard to the battlefield.

Nantuko Husk

Sacrifice a creature: Nantuko Husk gets +2/+2 until end of turn.

Clay Statue

Ghostly Visit

Crazed Skirge

Bog Raiders

Plague Wind

Destroy all creatures you don't control. They can't be regenerated.

Necrosavant

{3}{B}{B}, Sacrifice a creature: Return Necrosavant from your graveyard to the battlefield. Activate only during your upkeep.