Cabal Coffers

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

Mind Sludge

Target player discards a card for each Swamp you control.

Nantuko Shade

{B}: This creature gets +1/+1 until end of turn.

Corrupt

Corrupt deals damage to any target equal to the number of Swamps you control. You gain life equal to the damage dealt this way.

Mutilate

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

Innocent Blood

Each player sacrifices a creature of their choice.

Visara the Dreadful

Flying
{T}: Destroy target creature. It can't be regenerated.

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.)

Haunting Echoes

Exile all cards from target player's graveyard other than basic land cards. For each card exiled this way, search that player's library for all cards with the same name as that card and exile them. Then that player shuffles.

Riptide Replicator

As this artifact enters, choose a color and a creature type.
This artifact enters with X charge counters on it.
{4}, {T}: Create an X/X creature token of the chosen color and type, where X is the number of charge counters on this artifact.

Undead Gladiator

{1}{B}, Discard a card: Return this card from your graveyard to your hand. Activate only during your upkeep.
Cycling {1}{B} ({1}{B}, Discard this card: Draw a card.)

Cabal Therapy

Choose a nonland card name. Target player reveals their hand and discards all cards with that name.
Flashback—Sacrifice a creature. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Engineered Plague

As this enchantment enters, choose a creature type.
All creatures of the chosen type get -1/-1.

Mirari

Whenever you cast an instant or sorcery spell, you may pay {3}. If you do, copy that spell. You may choose new targets for the copy.

Diabolic Tutor

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

Swamp

Laquatus's Champion

When this creature enters, target player loses 6 life.
When this creature leaves the battlefield, that player gains 6 life.
{B}: Regenerate this creature.

Smother

Destroy target creature with mana value 3 or less. It can't be regenerated.

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.

Duress

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