Relic Putrescence

Enchant artifact
Whenever enchanted artifact becomes tapped, its controller gets a poison counter.

Caress of Phyrexia

Target player draws three cards, loses 3 life, and gets three poison counters.

Leeching Bite

Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn.

Glissa's Scorn

Destroy target artifact. Its controller loses 1 life.

Cystbearer

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Pestilent Souleater

{B/P}: This creature gains infect until end of turn. ({B/P} can be paid with either {B} or 2 life. A creature with infect deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Psychic Barrier

Counter target creature spell. Its controller loses 1 life.

Flameborn Hellion

Haste
This creature attacks each combat if able.

Swamp

Acid Web Spider

Reach
When this creature enters, you may destroy target Equipment.

Isolation Cell

Whenever an opponent casts a creature spell, that player loses 2 life unless they pay {2}.

Panic Spellbomb

{T}, Sacrifice this artifact: Target creature can't block this turn.
When this artifact is put into a graveyard from the battlefield, you may pay {R}. If you do, draw a card.

Tunnel Ignus

Whenever a land enters under an opponent's control, if that player had another land enter the battlefield under their control this turn, this creature deals 3 damage to that player.

Gremlin Mine

{1}, {T}, Sacrifice this artifact: It deals 4 damage to target artifact creature.
{1}, {T}, Sacrifice this artifact: Remove up to four charge counters from target noncreature artifact.

Fulgent Distraction

Choose two target creatures. Tap those creatures, then unattach all Equipment from them.

Darksteel Plate

Indestructible
Equipped creature has indestructible.
Equip {2}

Vapor Snag

Return target creature to its owner's hand. Its controller loses 1 life.

Plains

Blighted Agent

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
This creature can't be blocked.

Vector Asp

{B}: This creature gains infect until end of turn. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Furnace Scamp

Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, this creature deals 3 damage to that player.

Psychosis Crawler

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand.
Whenever you draw a card, each opponent loses 1 life.

Contagion Clasp

When this artifact enters, put a -1/-1 counter on target creature.
{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Virulent Wound

Put a -1/-1 counter on target creature. When that creature dies this turn, its controller gets a poison counter.

Strider Harness

Equipped creature gets +1/+1 and has haste.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Rot Wolf

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Whenever a creature dealt damage by Rot Wolf this turn dies, you may draw a card.

Unnatural Predation

Target creature gets +1/+1 and gains trample until end of turn.

Blistergrub

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
When this creature dies, each opponent loses 2 life.

Culling Dais

{T}, Sacrifice a creature: Put a charge counter on this artifact.
{1}, Sacrifice this artifact: Draw a card for each charge counter on this artifact.

Auriok Edgewright

Metalcraft — This creature has double strike as long as you control three or more artifacts.

Ichor Wellspring

When this artifact enters or is put into a graveyard from the battlefield, draw a card.

Corrosive Gale

({G/P} can be paid with either {G} or 2 life.)
Corrosive Gale deals X damage to each creature with flying.

Training Drone

This creature can't attack or block unless it's equipped.

Shriek Raptor

Flying
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Rally the Forces

Attacking creatures get +1/+0 and gain first strike until end of turn.

Banishment Decree

Put target artifact, creature, or enchantment on top of its owner's library.

Omen Machine

Players can't draw cards.
At the beginning of each player's draw step, that player exiles the top card of their library. If it's a land card, the player puts it onto the battlefield. Otherwise, the player casts it without paying its mana cost if able.

Vault Skyward

Target creature gains flying until end of turn. Untap it.

Tine Shrike

Flayer Husk

Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)
Equipped creature gets +1/+1.
Equip {2}