Abjure

As an additional cost to cast this spell, sacrifice a blue permanent.
Counter target spell.

Abhorrent Overlord

Flying
When this creature enters, create a number of 1/1 black Harpy creature tokens with flying equal to your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)
At the beginning of your upkeep, sacrifice a creature.

Abyssal Specter

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

Abyssal Gatekeeper

When this creature dies, each player sacrifices a creature of their choice.

Marchesa, the Black Rose

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)
Other creatures you control have dethrone.
Whenever a creature you control with a +1/+1 counter on it dies, return that card to the battlefield under your control at the beginning of the next end step.

Abyssal Persecutor

Flying, trample
You can't win the game and your opponents can't lose the game.

Accursed Spirit

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Acid Rain

Abrade

Choose one —
• Abrade deals 3 damage to target creature.
• Destroy target artifact.

Abyssal Nocturnus

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.)