Phyrexia: All Will Be One

Blightbelly Rat | Creature | Phyrexian Rat | Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) When Blightbelly Rat dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) | Yeong-Hao Han

Fleshless Gladiator | Creature | Phyrexian Skeleton | Corrupted — {2}{B}: Return Fleshless Gladiator from your graveyard to the battlefield tapped. You lose 1 life. Activate only if an opponent has three or more poison counters. | Konstantin Porubov

Pestilent Syphoner | Creature | Phyrexian Insect | Flying Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) | Brian Valeza

Scheming Aspirant | Creature | Phyrexian Advisor | Whenever you proliferate, each opponent loses 2 life and you gain 2 life. | Lauren K. Cannon

Vraan, Executioner Thane | Legendary Creature | Phyrexian Vampire | Whenever one or more other creatures you control die, each opponent loses 2 life and you gain 2 life. This ability triggers only once each turn. | Helge C. Balzer

Venser, Corpse Puppet | Legendary Creature | Phyrexian Zombie Wizard | Lifelink, toxic 1 Whenever you proliferate, choose one — • If you don't control a creature named The Hollow Sentinel, create The Hollow Sentinel, a legendary 3/3 colorless Phyrexian Golem artifact creature token. • Target artifact creature you control gains flying and lifelink until end of turn. | Igor Kieryluk

Voidwing Hybrid | Creature | Phyrexian Bat | Flying Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) When you proliferate, return Voidwing Hybrid from your graveyard to your hand. | Abz J Harding