Augur of Skulls

{1}{B}: Regenerate Augur of Skulls.
Sacrifice Augur of Skulls: Target player discards two cards. Activate only during your upkeep.

Duress

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

Nyxathid

As Nyxathid enters, choose an opponent.
Nyxathid gets -1/-1 for each card in the chosen player's hand.

Swamp

Dark Ritual

Cabal Coffers

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

Mind Twist

Target player discards X cards at random.

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

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.

Hypnotic Specter

Flying
Whenever Hypnotic Specter deals damage to an opponent, that player discards a card at random.

The Rack

As The Rack enters, choose an opponent.
At the beginning of the chosen player's upkeep, The Rack deals X damage to that player, where X is 3 minus the number of cards in their hand.