Bojuka Bog

Bojuka Bog enters tapped.
When Bojuka Bog enters, exile target player's graveyard.
{T}: Add {B}.

Lotus Petal

{T}, Sacrifice Lotus Petal: Add one mana of any color.

Hymn to Tourach

Target player discards two cards at random.

Divest

Target player reveals their hand. You choose an artifact or creature card from it. That player discards that card.

Disfigure

Target creature gets -2/-2 until end of turn.

Echoing Decay

Target creature and all other creatures with the same name as that creature get -2/-2 until end of turn.

Dark Ritual

Snuff Out

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack 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.)

Peat Bog

Peat Bog enters tapped with two depletion counters on it.
{T}, Remove a depletion counter from Peat Bog: Add {B}{B}. If there are no depletion counters on Peat Bog, sacrifice it.

Duress

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

Thorn of the Black Rose

Deathtouch
When Thorn of the Black Rose enters, you become the monarch.

Crypt Rats

{X}: Crypt Rats deals X damage to each creature and each player. Spend only black mana on X.

Cuombajj Witches

{T}: Cuombajj Witches deals 1 damage to any target and 1 damage to any target of an opponent's choice.

Gurmag Angler

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

Moment of Craving

Target creature gets -2/-2 until end of turn. You gain 2 life.

Unexpected Fangs

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

Sinkhole

Vicious Battlerager

When Vicious Battlerager enters, you take the initiative.
Spiked Retribution — Whenever Vicious Battlerager becomes blocked by a creature, that creature's controller loses 5 life.

Underdark Explorer

Menace (This creature can't be blocked except by two or more creatures.)
When Underdark Explorer enters, you take the initiative.

Chittering Rats

When Chittering Rats enters, target opponent puts a card from their hand on top of their library.

Raven's Crime

Target player discards a card.
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)