Tattered Mummy

When this creature dies, each opponent loses 2 life.

Cadaver Imp

Flying
When this creature enters, you may return target creature card from your graveyard to your hand.

Festering Mummy

When this creature dies, you may put a -1/-1 counter on target creature.

Sewer Nemesis

As this creature enters, choose a player.
Sewer Nemesis's power and toughness are each equal to the number of cards in the chosen player's graveyard.
Whenever the chosen player casts a spell, that player mills a card.

Myr Retriever

When this creature dies, return another target artifact card from your graveyard to your hand.

Shirei, Shizo's Caretaker

Whenever a creature with power 1 or less is put into your graveyard from the battlefield, you may return that card to the battlefield at the beginning of the next end step if Shirei is still on the battlefield.

Apprentice Necromancer

{B}, {T}, Sacrifice this creature: Return target creature card from your graveyard to the battlefield. That creature gains haste. At the beginning of the next end step, sacrifice it.

Noosegraf Mob

This creature enters with five +1/+1 counters on it.
Whenever a player casts a spell, remove a +1/+1 counter from this creature. If you do, create a 2/2 black Zombie creature token.

Myr Sire

When this creature dies, create a 1/1 colorless Phyrexian Myr artifact creature token.

Doomed Dissenter

When this creature dies, create a 2/2 black Zombie creature token.

Dusk Legion Zealot

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

Activated Sleeper

Flash
You may have this creature enter as a copy of any creature card in a graveyard that was put there from the battlefield this turn, except it's a Phyrexian in addition to its other types.

Serrated Scorpion

When this creature dies, it deals 2 damage to each opponent and you gain 2 life.

Marsh Flitter

Flying
When this creature enters, create two 1/1 black Goblin Rogue creature tokens.
Sacrifice a Goblin: This creature has base power and toughness 3/3 until end of turn.

Skyscanner

Flying
When this creature enters, draw a card.

Big Game Hunter

When this creature enters, destroy target creature with power 4 or greater. It can't be regenerated.
Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Abyssal Gatekeeper

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

Dutiful Attendant

When this creature dies, return another target creature card from your graveyard to your hand.

Infectious Host

When this creature dies, target player loses 2 life.

Scavenger Drake

Flying
Whenever another creature dies, you may put a +1/+1 counter on this creature.

Zulaport Cutthroat

Whenever this creature or another creature you control dies, each opponent loses 1 life and you gain 1 life.