Bonehoard

Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)
Equipped creature gets +X/+X, where X is the number of creature cards in all graveyards.
Equip {2}

Vraska, Scheming Gorgon

+2: Creatures you control get +1/+0 until end of turn.
−3: Destroy target creature.
−10: Until end of turn, creatures you control gain deathtouch and "Whenever this creature deals damage to an opponent, that player loses the game."

Explosive Apparatus

{3}, {T}, Sacrifice Explosive Apparatus: It deals 2 damage to any target.

Torment of Venom

Put three -1/-1 counters on target creature. Its controller loses 3 life unless they sacrifice another nonland permanent or discards a card.

Archangel

Angel of Renewal

Flying
When Angel of Renewal enters, you gain 1 life for each creature you control.

Harrowing Journey

Target player draws three cards and loses 3 life.

Hand of Silumgar

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Opaline Unicorn

Pestilence Demon

Flying
{B}: Pestilence Demon deals 1 damage to each creature and each player.

Nightmare

Flying (This creature can't be blocked except by creatures with flying or reach.)
Nightmare's power and toughness are each equal to the number of Swamps you control.

Liliana Vess

+1: Target player discards a card.
−2: Search your library for a card, then shuffle and put that card on top.
−8: Put all creature cards from all graveyards onto the battlefield under your control.

Dawnfeather Eagle

Flying
When Dawnfeather Eagle enters, creatures you control get +1/+1 and gain vigilance until end of turn.

Harsh Sustenance

Harsh Sustenance deals X damage to any target and you gain X life, where X is the number of creatures you control.

Mass Calcify

Consulate Skygate

Defender
Reach (This creature can block creatures with flying.)

Pacifism

Enchant creature
Enchanted creature can't attack or block.

Nyx-Fleece Ram

At the beginning of your upkeep, you gain 1 life.

Rancid Rats

Skulk (This creature can't be blocked by creatures with greater power.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Phyrexian Vatmother

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
At the beginning of your upkeep, you get a poison counter.

Vraska's Scorn

Target opponent loses 4 life. You may search your library and/or graveyard for a card named Vraska, Scheming Gorgon, reveal it, and put it into your hand. If you search your library this way, shuffle.

Vessel of Malignity

{1}{B}, Sacrifice Vessel of Malignity: Target opponent exiles two cards from their hand. Activate only as a sorcery.

Ogre Slumlord

Whenever another nontoken creature dies, you may create a 1/1 black Rat creature token.
Rats you control have deathtouch.

Visara the Dreadful

Flying
{T}: Destroy target creature. It can't be regenerated.

Moaning Wall

Defender
Cycling {2} ({2}, Discard this card: Draw a card.)

Swamp

Priest of Gix

When Priest of Gix enters, add {B}{B}{B}.

Sorin, Lord of Innistrad

+1: Create a 1/1 black Vampire creature token with lifelink.
−2: You get an emblem with "Creatures you control get +1/+0."
−6: Destroy up to three target creatures and/or other planeswalkers. Return each card put into a graveyard this way to the battlefield under your control.

Plains

Forsaken Sanctuary

Forsaken Sanctuary enters tapped.
{T}: Add {W} or {B}.

Abhorrent Overlord

Flying
When Abhorrent Overlord 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.