Cabal Pit

{T}: Add {B}. This land deals 1 damage to you.
Threshold — {B}, {T}, Sacrifice this land: Target creature gets -2/-2 until end of turn. Activate only if there are seven or more cards in your graveyard.

Spawning Pool

This land enters tapped.
{T}: Add {B}.
{1}{B}: This land becomes a 1/1 black Skeleton creature with "{B}: Regenerate this creature" until end of turn. It's still a land. (If it regenerates, the next time it would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Swamp

Foul Imp

Flying
When this creature enters, you lose 2 life.

Phyrexian Tower

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

Phyrexian Debaser

Flying
{T}, Sacrifice this creature: Target creature gets -2/-2 until end of turn.

Zombify

Return target creature card from your graveyard to the battlefield.

Subterranean Hangar

This land enters tapped.
{T}: Put a storage counter on this land.
{T}, Remove any number of storage counters from this land: Add {B} for each storage counter removed this way.

Rats' Feast

Exile X target cards from a single graveyard.

Shattered Crypt

Return X target creature cards from your graveyard to your hand. You lose X life.

Darkness

Prevent all combat damage that would be dealt this turn.

Unearth

Return target creature card with mana value 3 or less from your graveyard to the battlefield.
Cycling {2} ({2}, Discard this card: Draw a card.)

Prowling Pangolin

When this creature enters, any player may sacrifice two creatures of their choice. If a player does, sacrifice this creature.

Gravestorm

At the beginning of your upkeep, target opponent may exile a card from their graveyard. If that player doesn't, you may draw a card.

Toxin Sliver

Whenever a Sliver deals combat damage to a creature, destroy that creature. It can't be regenerated.

Skulltap

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

Infected Vermin

{2}{B}: This creature deals 1 damage to each creature and each player.
Threshold — {3}{B}: This creature deals 3 damage to each creature and each player. Activate only if there are seven or more cards in your graveyard.

Parallax Dementia

Enchant creature
Fading 1 (This enchantment enters with one fade counter on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)
Enchanted creature gets +3/+2.
When this Aura leaves the battlefield, destroy enchanted creature. That creature can't be regenerated.

Bottomless Vault

This land enters tapped.
You may choose not to untap this land during your untap step.
At the beginning of your upkeep, if this land is tapped, put a storage counter on it.
{T}, Remove any number of storage counters from this land: Add {B} for each storage counter removed this way.

Phyrexian Rager

When this creature enters, you draw a card and you lose 1 life.

Maggot Carrier

When this creature enters, each player loses 1 life.

Disease Carriers

When this creature dies, target creature gets -2/-2 until end of turn.

Tainted Well

Enchant land
When this Aura enters, draw a card.
Enchanted land is a Swamp.

Polluted Mire

This land enters tapped.
{T}: Add {B}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Funeral Charm

Choose one —
• Target player discards a card.
• Target creature gets +2/-1 until end of turn.
• Target creature gains swampwalk until end of turn. (It can't be blocked as long as defending player controls a Swamp.)

Ghastly Demise

Destroy target nonblack creature if its toughness is less than or equal to the number of cards in your graveyard.

Vendetta

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

Kjeldoran Dead

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

Phyrexian Broodlings

{1}, Sacrifice a creature: Put a +1/+1 counter on this creature.

Barren Moor

This land enters tapped.
{T}: Add {B}.
Cycling {B} ({B}, Discard this card: Draw a card.)

Bog Wreckage

This land enters tapped.
{T}: Add {B}.
{T}, Sacrifice this land: Add one mana of any color.

Seal of Doom

Sacrifice this enchantment: Destroy target nonblack creature. It can't be regenerated.

Feast of the Unicorn

Enchant creature
Enchanted creature gets +4/+0.

Plague Dogs

When this creature dies, all creatures get -1/-1 until end of turn.
{2}, Sacrifice this creature: Draw a card.

Insubordination

Enchant creature
At the beginning of the end step of enchanted creature's controller, this Aura deals 2 damage to that player unless that creature attacked this turn.

Accursed Centaur

When this creature enters, sacrifice a creature.

Gravedigger

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

Paralyze

Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
At the beginning of the upkeep of enchanted creature's controller, that player may pay {4}. If the player does, untap the creature.

Soul Scourge

Flying
When this creature enters, target player loses 3 life.
When this creature leaves the battlefield, that player gains 3 life.

Twisted Abomination

{B}: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)
Swampcycling {2} ({2}, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.)

Hidden Horror

When this creature enters, sacrifice it unless you discard a creature card.

Enfeeblement

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature gets -2/-2.

Crippling Fatigue

Target creature gets -2/-2 until end of turn.
Flashback—{1}{B}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Mourning

Enchant creature
Enchanted creature gets -2/-0.
{B}: Return this Aura to its owner's hand.

Wake of Vultures

Flying
{1}{B}, Sacrifice a creature: Regenerate this creature.

Lake of the Dead

If this land would enter, sacrifice a Swamp instead. If you do, put this land onto the battlefield. If you don't, put it into its owner's graveyard.
{T}: Add {B}.
{T}, Sacrifice a Swamp: Add {B}{B}{B}{B}.

Bog Imp

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

Diseased Vermin

Whenever this creature deals combat damage to a player, put an infection counter on it.
At the beginning of your upkeep, this creature deals X damage to target opponent previously dealt damage by it, where X is the number of infection counters on it.

Zombie Boa

{1}{B}: Choose a color. Whenever this creature becomes blocked by a creature of that color this turn, destroy that creature. Activate only as a sorcery.

Steal Strength

Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn.

Clot Sliver

All Slivers have "{2}: Regenerate this permanent."

Unholy Strength

Enchant creature
Enchanted creature gets +2/+1.

Toxic Stench

Target nonblack creature gets -1/-1 until end of turn.
Threshold — If there are seven or more cards in your graveyard, instead destroy that creature. It can't be regenerated.

Belbe's Percher

Flying
This creature can block only creatures with flying.

Skeletal Scrying

As an additional cost to cast this spell, exile X cards from your graveyard.
You draw X cards and you lose X life.

Traveling Plague

Enchant creature
At the beginning of each upkeep, put a plague counter on this Aura.
Enchanted creature gets -1/-1 for each plague counter on this Aura.
When enchanted creature leaves the battlefield, that creature's controller returns this Aura from its owner's graveyard to the battlefield.

Death Bomb

As an additional cost to cast this spell, sacrifice a creature.
Destroy target nonblack creature. It can't be regenerated. Its controller loses 2 life.

Peat Bog

This land enters tapped with two depletion counters on it.
{T}, Remove a depletion counter from this land: Add {B}{B}. If there are no depletion counters on this land, sacrifice it.

Morgue Toad

Hyalopterous Lemure

{0}: This creature gets -1/-0 and gains flying until end of turn.

Misery Charm

Choose one —
• Destroy target Cleric.
• Return target Cleric card from your graveyard to your hand.
• Target player loses 2 life.

Rabid Rats

{T}: Target blocking creature gets -1/-1 until end of turn.

Oubliette

When this enchantment enters, target creature phases out until this enchantment leaves the battlefield. Tap that creature as it phases in this way. (Auras and Equipment phase out with it. While permanents are phased out, they're treated as though they don't exist.)

Transmutation

Switch target creature's power and toughness until end of turn.

Crypt Sliver

All Slivers have "{T}: Regenerate target Sliver."

Snow-Covered Swamp

Armor Thrull

{T}, Sacrifice this creature: Put a +1/+2 counter on target creature.

Phyrexian Boon

Enchant creature
Enchanted creature gets +2/+1 as long as it's black. Otherwise, it gets -1/-2.

Circling Vultures

Flying
You may discard this card any time you could cast an instant.
At the beginning of your upkeep, sacrifice this creature unless you exile the top creature card of your graveyard.

Infest

All creatures get -2/-2 until end of turn.

Everglades

This land enters tapped.
When this land enters, sacrifice it unless you return an untapped Swamp you control to its owner's hand.
{T}: Add {C}{B}.

Phyrexian Gargantua

When this creature enters, you draw two cards and you lose 2 life.

Diabolic Edict

Target player sacrifices a creature of their choice.

Ebon Stronghold

This land enters tapped.
{T}: Add {B}.
{T}, Sacrifice this land: Add {B}{B}.

Spectral Sliver

All Sliver creatures have "{2}: This creature gets +1/+1 until end of turn."

Lim-Dûl's High Guard

First strike
{1}{B}: Regenerate this creature.

Casting of Bones

Enchant creature
When enchanted creature dies, draw three cards, then discard one of them.