Pestilence

At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment.
{B}: This enchantment deals 1 damage to each creature and each player.

Snuff Out

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack creature. It can't be regenerated.

Rancid Earth

Destroy target land.
Threshold — If seven or more cards are in your graveyard, instead destroy that land and Rancid Earth deals 1 damage to each creature and each player.

Cuombajj Witches

{T}: This creature deals 1 damage to any target and 1 damage to any target of an opponent's choice.

Swamp

Thorn of the Black Rose

Deathtouch
When this creature enters, you become the monarch.

Contaminated Ground

Enchant land
Enchanted land is a Swamp.
Whenever enchanted land becomes tapped, its controller loses 2 life.

Dusk Legion Zealot

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

Doom Blade

Psychic Venom

Enchant land
Whenever enchanted land becomes tapped, this Aura deals 2 damage to that land's controller.

Choking Sands

Destroy target non-Swamp land. If that land was nonbasic, Choking Sands deals 2 damage to the land's controller.

Dark Ritual

Befoul

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

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.

Island

Radiant Fountain

When this land enters, you gain 2 life.
{T}: Add {C}.

Relic of Progenitus

{T}: Target player exiles a card from their graveyard.
{1}, Exile this artifact: Exile all graveyards. Draw a card.

Sign in Blood

Target player draws two cards and loses 2 life.

Night's Whisper

Divest

Target player reveals their hand. You choose an artifact or creature card from it. That player discards that card.

Nausea

All creatures get -1/-1 until end of turn.

Spell Pierce

Counter target noncreature spell unless its controller pays {2}.

Mistvault Bridge

This land enters tapped.
Indestructible
{T}: Add {U} or {B}.

Cast Down

Gurmag Angler

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)