Contagious Nim

Cystbearer

Creature — Phyrexian Beast (2/3)

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

Blackcleave Goblin

Creature — Phyrexian Goblin Zombie (2/1)

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

Hand of the Praetors

Creature — Phyrexian Zombie (3/2)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Other creatures you control with infect get +1/+1.
Whenever you cast a creature spell with infect, target player gets a poison counter.

Ichor Rats

Creature — Phyrexian Rat (2/1)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
When Ichor Rats enters the battlefield, each player gets a poison counter.

Plague Stinger

Creature — Phyrexian Insect Horror (1/1)

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

Blistergrub

Creature — Phyrexian Horror (2/2)

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

Dross Hopper

Creature — Phyrexian Insect Horror (2/1)

Sacrifice a creature: Dross Hopper gains flying until end of turn.

Moriok Reaver

Creature — Human Warrior (3/2)

Necrogen Scudder

Creature — Phyrexian Horror (3/3)

Flying
When Necrogen Scudder enters the battlefield, you lose 3 life.

Necrotic Ooze

Creature — Ooze (4/3)

As long as Necrotic Ooze is on the battlefield, it has all activated abilities of all creature cards in all graveyards.

Painsmith

Creature — Human Artificer (2/1)

Whenever you cast an artifact spell, you may have target creature get +2/+0 and gain deathtouch until end of turn.

Skinrender

Creature — Phyrexian Zombie (3/3)

When Skinrender enters the battlefield, put three -1/-1 counters on target creature.

Blight Mamba

Creature — Phyrexian Snake (1/1)

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

Corpse Cur

Artifact Creature — Phyrexian Dog (2/2)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
When Corpse Cur enters the battlefield, you may return target creature card with infect from your graveyard to your hand.

Ichorclaw Myr

Artifact Creature — Phyrexian Myr (1/1)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Whenever Ichorclaw Myr becomes blocked, it gets +2/+2 until end of turn.

Necropede

Artifact Creature — Phyrexian Insect (1/1)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
When Necropede dies, you may put a -1/-1 counter on target creature.

Skithiryx, the Blight Dragon

Legendary Creature — Phyrexian Dragon Skeleton (4/4)

Flying
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
: Skithiryx, the Blight Dragon gains haste until end of turn.
: Regenerate Skithiryx.

Tangle Angler

Creature — Phyrexian Horror (1/5)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
: Target creature blocks Tangle Angler this turn if able.

Tel-Jilad Fallen

Creature — Phyrexian Elf Warrior (3/1)

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

Abuna Acolyte

Creature — Cat Cleric (1/1)

: Prevent the next 1 damage that would be dealt to any target this turn.
: Prevent the next 2 damage that would be dealt to target artifact creature this turn.