Abyssal Specter

Flying
Whenever Abyssal Specter deals damage to a player, that player discards a card.

Coercion

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

Duress

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

Mind Twist

Target player discards X cards at random.

Stupor

Target opponent discards a card at random, then discards a card.

Fugue

Hypnotic Specter

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

Mind Ravel

Target player discards a card.
Draw a card at the beginning of the next turn's upkeep.

Blizzard Specter

Flying
Whenever Blizzard Specter deals combat damage to a player, choose one —
• That player returns a permanent they control to its owner's hand.
• That player discards a card.

Cloak of Confusion

Enchant creature you control
Whenever enchanted creature attacks and isn't blocked, you may have it assign no combat damage this turn. If you do, defending player discards a card at random.