mono black discard

Whenever an opponent discards a card, this creature gets +2/+2 and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Target player discards a card.

Haunt (When this spell card is put into a graveyard after resolving, exile it haunting target creature.)

When the creature this card haunts dies, target player discards a card.

Menace

Whenever this creature deals combat damage to a player, that player discards that many cards.

Eternalize {4}{B}{B} ({4}{B}{B}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Human Wizard with no mana cost. Eternalize only as a sorcery.)

Flying

This creature gets +3/+3 as long as an opponent has no cards in hand.

Whenever this creature deals combat damage to a player, that player discards a card.

Target player discards two cards at random.

Flying

Whenever this creature deals damage to an opponent, that player discards a card at random.

({T}: Add {B}.)

This land enters tapped.

{B}, {T}: Each opponent loses 1 life. Activate only if you control two or more black permanents.

Whenever an opponent discards a card, that player loses 2 life.

Whenever an opponent discards a card, this enchantment deals 2 damage to that player.

This land enters tapped.

When this land enters, target player loses 1 life.

{T}: Add {B}.

Whenever an opponent discards a card, you may put a quest counter on this enchantment.

At the beginning of each opponent's upkeep, if that player has no cards in hand and this enchantment has two or more quest counters on it, you may have that player lose 5 life.

Target player draws two cards and loses 2 life.

({T}: Add {B}.)

({T}: Add {B}.)