When Hopeless Nightmare enters the battlefield, each opponent discards a card and loses 2 life. When Hopeless Nightmare is put into a graveyard from the battlefield, scry 2. {2}{B}: Sacrifice Hopeless Nightmare.

Rakdos Carnarium enters the battlefield tapped. When Rakdos Carnarium enters the battlefield, return a land you control to its owner's hand. {T}: Add {B}{R}.

Target opponent loses 3 life and you gain 3 life. Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Target opponent loses 3 life. Flashback {5}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target player draws two cards and loses 2 life.

Destroy target nongreen creature. Its controller loses 3 life if you've cast another black spell this turn.

Target player loses 3 life and you gain 3 life.

Will of the council — Starting with you, each player votes for death or torture. If death gets more votes, each opponent sacrifices a creature. If torture gets more votes or the vote is tied, each opponent loses 4 life.

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

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

Target player sacrifices a creature and loses 1 life.

As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Target player sacrifices a creature.

At the beginning of your end step, each opponent loses 1 life and you gain 1 life.

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