Règles complètes de Magic: The Gathering

121.1.

A counter is a marker placed on an object or player that modifies its characteristics and/or interacts with a rule, ability, or effect. Counters are not objects and have no characteristics. Notably, a counter is not a token, and a token is not a counter. Counters with the same name or description are interchangeable.

121.1a

A +X/+Y counter on a creature or on a creature card in a zone other than the battlefield, where X and Y are numbers, adds X to that object‘s power and Y to that object‘s toughness. Similarly, -X/-Y counters subtract from power and toughness. See rule 613.3.

121.1b

The number of loyalty counters on a planeswalker on the battlefield indicates how much loyalty it has. A planeswalker with 0 loyalty is put into its owner‘s graveyard as a state-based action. See rule 704.

121.1c

. If a player has ten or more poison counters, he or she loses the game as a state-based action. See rule 704. A player is «poisoned» if he or she has one or more poison counters. (See rule 810 for additional rules for Two-Headed Giant games.)

121.2.

Counters on an object are not retained if that object moves from one zone to another. The counters are not «removed»; they simply cease to exist. See rule 400.7.

121.3.

If a permanent has both a +1/+1 counter and a -1/-1 counter on it, N +1/+1 and N -1/-1 counters are removed from it as a state-based action, where N is the smaller of the number of +1/+1 and -1/-1 counters on it. See rule 704.

121.4.

If a permanent with an ability that says it can‘t have more than N counters of a certain kind on it has more than N counters of that kind on it, all but N of those counters are removed from it as a state-based action. See rule 704.

121.5.

If an effect says to «move» a counter, it means to take that counter from the object it‘s currently on and put it onto a second object. If the first and second objects are the same object, nothing happens. If the first object has no counters, nothing happens; the second object doesn‘t get a counter put on it. If the second object (or any possible second objects) is no longer in the correct zone when the effect would move the counter, nothing happens; a counter isn‘t removed from the first object.

121.6.

If a spell or ability refers to a counter being «placed» on a permanent, it means putting a counter on that permanent while it‘s on the battlefield, or that permanent entering the battlefield with a counter on it as the result of a replacement effect (see rule 614.1c).