Divest

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

Defile

Target creature gets -1/-1 until end of turn for each Swamp you control.

Audacious Thief

Whenever Audacious Thief attacks, you draw a card and you lose 1 life.

Distress

Target player reveals their hand. You choose a nonland card from it. That player discards that card.

Cremate

Exile target card from a graveyard.
Draw a card.

Dark Ritual

Chainer's Edict

Target player sacrifices a creature of their choice.
Flashback {5}{B}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Tendrils of Corruption

Tendrils of Corruption deals X damage to target creature and you gain X life, where X is the number of Swamps you control.

Evincar's Justice

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Evincar's Justice deals 2 damage to each creature and each player.

Consume Spirit

Spend only black mana on X.
Consume Spirit deals X damage to any target and you gain X life.

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Skittering Skirge

Flying
When you cast a creature spell, sacrifice Skittering Skirge.

Swamp

Cuombajj Witches

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

Geth's Verdict

Target player sacrifices a creature of their choice and loses 1 life.

Skittering Horror

When you cast a creature spell, sacrifice Skittering Horror.

Sign in Blood

Target player draws two cards and loses 2 life.

Choking Sands

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

Wrench Mind

Target player discards two cards unless they discard an artifact card.

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.