Vampire Nighthawk

Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Final Parting

Search your library for two cards. Put one into your hand and the other into your graveyard. Then shuffle.

Horrifying Revelation

Target player discards a card, then mills a card.

Mindcrank

Whenever an opponent loses life, that player mills that many cards. (Damage causes loss of life.)

Wight of Precinct Six

Wight of Precinct Six gets +1/+1 for each creature card in your opponents' graveyards.

Watery Grave

({T}: Add {U} or {B}.)
As Watery Grave enters, you may pay 2 life. If you don't, it enters tapped.

Liliana's Specter

Flying
When Liliana's Specter enters, each opponent discards a card.

Heartless Summoning

Creature spells you cast cost {2} less to cast.
Creatures you control get -1/-1.

Mind Rot

Returned Reveler

When Returned Reveler dies, each player mills three cards.

Diabolic Edict

Target player sacrifices a creature of their choice.

Duress

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

Grasp of Darkness

Target creature gets -4/-4 until end of turn.

Liliana's Caress

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

Altar of the Brood

Whenever another permanent you control enters, each opponent mills a card.

Diabolic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Blood Seeker

Whenever a creature an opponent controls enters, you may have that player lose 1 life.

Gatekeeper of Malakir

Kicker {B} (You may pay an additional {B} as you cast this spell.)
When this creature enters, if it was kicked, target player sacrifices a creature of their choice.

Distress

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

Altar's Reap

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.

Doom Blade

Dark Ritual

Duskmantle Guildmage

{1}{U}{B}: Whenever a card is put into an opponent's graveyard from anywhere this turn, that player loses 1 life.
{2}{U}{B}: Target player mills two cards.

Mind Sludge

Target player discards a card for each Swamp you control.

Myr Retriever

When Myr Retriever dies, return another target artifact card from your graveyard to your hand.