Mutilate

All creatures get -1/-1 until end of turn for each Swamp you control.

Diabolic Edict

Target player sacrifices a creature of their choice.

Dark Ritual

Tainted Aether

Whenever a creature enters, its controller sacrifices a creature or land of their choice.

Hymn to Tourach

Target player discards two cards at random.

Thoughtseize

Target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

Mind Twist

Target player discards X cards at random.

Black Sun's Zenith

Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.

Damnation

Destroy all creatures. They can't be regenerated.

Swamp

Phyrexian Arena

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

Sinkhole

Exsanguinate

Each opponent loses X life. You gain life equal to the life lost this way.

Cabal Coffers

{2}, {T}: Add {B} for each Swamp you control.

Liliana Vess

+1: Target player discards a card.
−2: Search your library for a card, then shuffle and put that card on top.
−8: Put all creature cards from all graveyards onto the battlefield under your control.

Consume Spirit

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