Disfigure

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

Seekers' Squire

When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Sign in Blood

Target player draws two cards and loses 2 life.

Diabolic Edict

Target player sacrifices a creature of their choice.

Vampire Sovereign

Flying
When this creature enters, target opponent loses 3 life and you gain 3 life.

Swamp

Phyrexian Rager

When this creature enters, you draw a card and you lose 1 life.

Thorn of the Black Rose

Deathtouch
When this creature enters, you become the monarch.

Gray Merchant of Asphodel

When this creature enters, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Demolish

Barren Moor

This land enters tapped.
{T}: Add {B}.
Cycling {B} ({B}, Discard this card: Draw a card.)

Chittering Rats

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

Cuombajj Witches

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