Charge counter

Charge counters are the third most common counter type in Magic, and serve as the default counter for noncreature permanents. They were introduced on the Ice Age cards Ice Cauldron and Jeweled Amulet, though they also have been retroactively applied to the Legends cycle.

While charge counters are the default choice, many other counter types exist. Charge counters are one of the few types that are mechanically referenced on other cards, whereas other types are given distinct names for the sake of flavor.

Mechanics
Despite their frequency, charge counters have only been used by a single keyworded mechanic.
 * Sunburst