Poison counter

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A poison counter is a counter that may be given to a player to create an alternate way of winning the game. When a player has ten (10) or more of them, that player loses the game. A player is “poisoned” if he or she has one or more poison counters.


The poison mechanic was introduced in Legends with Pit Scorpion and Serpent Generator and appeared in sets up until Visions but was never strongly supported. The mechanic resurfaced in Future Sight and afterwards became a major theme in the entire Scars of Mirrodin block. [1] That block provided three different cardboard versions as part of the marketing cards. [2]

Poison was also considered for the unreleased Unglued 2. [3]


From the Comprehensive Rules

  • 104.3d If a player has ten or more poison counters, he or she loses the game the next time a player would receive priority. (This is a state-based effect. See rule 704.)

In Two-Headed Giant, a team with fifteen (15) poison counters loses the game.

From the Comprehensive Rules

  • 810.8d If a team has fifteen or more poison counters, that team loses the game. (This is a state-based action. See rule 704.)

Since the counters have no other properties, and rarely any other card affects or is affected by them, they do not hold much power in the metagame. Two keyword abilities use poison counters to inflict damage: "Infect", and "Poisonous". With infect; how many poison counters a creature deals to an opponent is equal to its power: 1/1 = deals 1 poison counter. 3/2 = deals 3 poison counters. These are dealt instead of regular damage, not in addition to it. However, with "Poisonous", the number of poison counters dealt in damage is equal to the N value in Poisonous N. For example, a 1/1 creature with Poisonous 2 deals 2 poison counters, as well as the 1 (non-poison) Damage, from the creature's power.

Cards using poison counter(s) before the keyword Infect & Poisonous[edit]




  1. Mark Rosewater. (September 06, 2010.) "Something Wicked This Way Comes, Part 1", Daily MTG,, Wizards of the Coast.
  2. Monty Ashley. (April 20, 2011.) "The Changing Face of Poison", Daily MTG,, Wizards of the Coast.
  3. Magic Arcana. (June 27, 2005.) "Mad Beetdown!", Daily MTG,, Wizards of the Coast.

Scars of Mirrodin block: Poison counters