Phyrexia: All Will Be One

Anoint with Affliction | Instant | | Exile target creature if it has mana value 3 or less. Corrupted — Exile that creature instead if its controller has three or more poison counters. | David Astruga

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

Offer Immortality | Instant | | Target creature gains deathtouch and indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) | A. M. Sartor

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