Poison counter/List of cards

The following cards create poison counters.

Legends

 * Pit Scorpion and Serpent Generator are the first to use poison counters.

The Dark

 * Marsh Viper is the first creature that when it deals damage to an opponent, that player gets two poison counters.

Homelands

 * Leeches is the first sorcery to deal with poison counters. It is also the only card to remove poison counters.

Alliances

 * Swamp Mosquito is the first flying creature that produces poison counters.

Mirage

 * Crypt Cobra
 * Sabertooth Cobra

Visions

 * Suq'Ata Assassin is the first creature with fear that produces poison counters.

Future Sight

 * Snake Cult Initiation</c>
 * Virulent Sliver</c>

Scars of Mirrodin

 * Relic Putrescence</c>

Infect
Creatures with infect deal damage in the form of -1/-1 counters and poison counters.
 *  Blackcleave Goblin</c>
 *  Blight Mamba</c>
 *  Carrion Call</c>
 *  Contagious Nim</c>
 *  Corpse Cur</c>
 *  Cystbearer</c>
 *  Grafted Exoskeleton</c>
 * Hand of the Praetors</c>
 * Ichor Rats</c> - also produces poison counters when it comes into the battlefield.
 * Ichorclaw Myr</c>
 * Necropede</c>
 * Plague Stinger</c>
 * Putrefax</c>
 * <c> Skithiryx, the Blight Dragon</c>
 * <c> Tainted Strike</c>
 * <c> Tangle Angler</c>
 * <c> Tel-Jilad Fallen</c>
 * <c>Vector Asp</c>

Mirrodin Besieged

 * <c>Decimator Web</c>
 * <c>Pistus Strike</c>

Infect

 * <c>Blightwidow</c>
 * <c>Core Prowler</c>
 * <c>Corrupted Conscience</c>
 * <c>Flensermite</c>
 * <c>Flesh-Eater Imp</c>
 * <c>Inkmoth Nexus</c>
 * <c>Phyresis</c>
 * <c>Phyrexian Crusader</c>
 * <c>Phyrexian Digester</c>
 * <c>Phyrexian Hydra</c>
 * <c>Phyrexian Juggernaut</c>
 * <c>Phyrexian Vatmother</c>
 * <c>Plague Myr</c>
 * <c>Priests of Norn</c>
 * <c>Rot Wolf</c>
 * <c>Scourge Servant</c>
 * <c>Septic Rats</c>
 * <c>Tine Shrike</c>
 * <c>Viridian Corrupter</c>

New Phyrexia

 * <c>Caress of Phyrexia</c>

Infect

 * <c>Blighted Agent</c>
 * <c>Chained Throatseeker</c>
 * <c>Fallen Ferromancer</c>
 * <c>Glistener Elf</c>
 * <c>Glistening Oil</c>
 * <c>Lost Leonin</c>
 * <c>Ogre Menial</c>
 * <c>Pestilent Souleater</c>
 * <c>Phyrexian Swarmlord</c>
 * <c>Phyrexian Unlife</c>
 * <c>Razor Swine</c>
 * <c>Reaper of Sheoldred</c>
 * <c>Shriek Raptor</c>
 * <c>Spinebiter</c>
 * <c>Toxic Nim</c>
 * <c>Triumph of the Hordes</c>
 * <c>Viral Drake</c>
 * <c>Viridian Betrayers</c>
 * <c>Whispering Specter</c>

Kaldheim

 * <c>Fynn, the Fangbearer</c>