Phyrexia: All Will Be One

Distorted Curiosity | Sorcery | | Corrupted — This spell costs {2} less to cast if an opponent has three or more poison counters. Draw two cards. | Svetlin Velinov

Reject Imperfection | Instant | | Counter target spell. If that spell's mana value was 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) | David Astruga

Tamiyo's Logbook | Artifact | | {5}{U}, {T}: Draw a card. This ability costs {1} less to activate for each other artifact you control. | Piotr Dura

Trawler Drake | Creature | Phyrexian Drake | Flying Trawler Drake enters the battlefield with an oil counter on it. Trawler Drake gets +1/+1 for each oil counter on it. Whenever you cast a noncreature spell, put an oil counter on Trawler Drake. | Daniel Ljunggren

Unctus's Retrofitter | Creature | Phyrexian Artificer | Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) When Unctus's Retrofitter enters the battlefield, up to one target artifact you control becomes an artifact creature with base power and toughness 4/4 for as long as Unctus's Retrofitter remains on the battlefield. | Cristi Balanescu

Tainted Observer | Creature | Phyrexian Bird | Flying Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) Whenever another creature enters the battlefield under your control, you may pay {2}. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) | Johann Bodin