Phyrexia: All Will Be One

Archfiend of the Dross | Creature | Phyrexian Demon | Flying Archfiend of the Dross enters the battlefield with four oil counters on it. At the beginning of your upkeep, remove an oil counter from Archfiend of the Dross. Then if it has no oil counters on it, you lose the game. Whenever a creature an opponent controls dies, its controller loses 2 life. | Lie Setiawan

Feed the Infection | Sorcery | | You draw three cards and you lose 3 life. Corrupted — Each opponent who has three or more poison counters loses 3 life. | Jason A. Engle

Necrosquito | Creature | Phyrexian Insect | Flying Necrosquito enters the battlefield with two oil counters on it. Necrosquito gets +1/+1 for each oil counter on it. Whenever another creature or artifact you control is put into a graveyard from the battlefield, put an oil counter on Necrosquito. | Abz J Harding

Phyrexian Obliterator | Creature | Phyrexian Horror | Trample Whenever a source deals damage to Phyrexian Obliterator, that source's controller sacrifices that many permanents. | Maxim Kostin

Ravenous Necrotitan | Creature | Phyrexian Horror | Corrupted — When Ravenous Necrotitan enters the battlefield, sacrifice a creature unless an opponent has three or more poison counters. | Johann Bodin

Sheoldred's Headcleaver | Creature | Phyrexian Warrior | Menace Toxic 2 (Players dealt combat damage by this creature also gets two poison counter.) | Andrey Kuzinskiy

Testament Bearer | Creature | Phyrexian Warrior | When Testament Bearer dies, look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard. | Raluca Marinescu

Ria Ivor, Bane of Bladehold | Legendary Creature | Phyrexian Knight | Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.) At the beginning of combat on your turn, the next time target creature would deal combat damage to one or more players this combat, prevent that damage. If damage is prevented this way, create that many 1/1 colorless Phyrexian Mite artifact creature tokens with toxic 1 and "This creature can't block." | Andreas Zafiratos

Kaito, Dancing Shadow | Legendary Planeswalker | Kaito | Whenever one or more creatures you control deal combat damage to a player, you may return one of them to its owner's hand. If you do, you may activate loyalty abilities of Kaito twice this turn rather than only once. +1: Up to one target creature can't attack or block until your next turn. 0: Draw a card. −2: Create a 2/2 colorless Drone artifact creature token with deathtouch and "When this creature leaves the battlefield, each opponent loses 2 life and you gain 2 life." | Daarken

Kethek, Crucible Goliath | Legendary Creature | Phyrexian Beast | At the beginning of your end step, you may sacrifice another creature. If you do, reveal cards from the top of your library until you reveal a nonlegendary creature card with lesser mana value, put it onto the battlefield, then put the rest on the bottom of your library in a random order. | Zoltan Boros

Necrogen Rotpriest | Creature | Phyrexian Zombie Cleric | Toxic 2 (Players dealt combat damage by this creature also get two poison counters.) Whenever a creature you control with toxic deals combat damage to a player, that player gets an additional poison counter. {1}{B}{G}: Target creature you control with toxic gains deathtouch until end of turn. | Igor Krstic