Swamp

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.

Headless Specter

Flying
Hellbent — Whenever Headless Specter deals combat damage to a player, if you have no cards in hand, that player discards a card at random.

Olivia's Dragoon

Discard a card: Olivia's Dragoon gains flying until end of turn.

Nihil Spellbomb

{T}, Sacrifice Nihil Spellbomb: Exile target player's graveyard.
When Nihil Spellbomb is put into a graveyard from the battlefield, you may pay {B}. If you do, draw a card.

Distress

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

Dark Ritual

Odious Witch

Whenever Odious Witch attacks, defending player loses 1 life and you gain 1 life.

Ragged Recluse

At the beginning of your end step, if you discarded a card this turn, transform Ragged Recluse.

Ragged Recluse // Odious Witch

Sign in Blood

Target player draws two cards and loses 2 life.

Cabal Initiate

Discard a card: Cabal Initiate gains lifelink until end of turn.
Threshold — Cabal Initiate gets +1/+2 as long as seven or more cards are in your graveyard.

Cast Down

Last Rites

Discard any number of cards. Target player reveals their hand, then you choose a nonland card from it for each card discarded this way. That player discards those cards.

Wrench Mind

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

Faerie Macabre

Flying
Discard Faerie Macabre: Exile up to two target cards from graveyards.

Unexpected Fangs

Put a +1/+1 counter and a lifelink counter on target creature.