Charm

Charm effects are a form of crowd control that gives control of a victim to the caster. This control can either be direct, giving the caster the same control as a Hunter pet (or his own character) or indirect, causing the victim to "switch sides" and physically attack his former allies with no additional actions needed from the caster. Some charm spells effectively put the caster to sleep while he controls his target.

Charmed targets are not freed by taking damage, but for channeled charm effects, damaging the caster will shorten the spell's duration, and interrupting the caster will break the effect. In PvP, charmed players effectively switch allegiance for the duration of the effect, allowing them to be buffed, healed and attacked accordingly.

Charm effects are subject to diminishing returns.

Any charm, no matter the duration listed, will last a maximum of 8 seconds when used against players in PvP.

Examples of abilities that Charm opponents:
 * Priest: Mind Control
 * Engineers: Gnomish Mind Control Cap, Gnomish Universal Remote (mechanical targets only)
 * Warlock: Enslave Demon (demons only)
 * A Warlock's pet Succubus can use the Seduction skill which is technically a "Charm" effect and can be dispelled as such, but acts more like a regular Sleep effect.

Counters

 * The PvP Trinkets
 * Hunter pets of hunters with the Bestial Wrath talent are immune to charm.
 * Forsaken characters can use their racial trait Will of the Forsaken to dispel charm.
 * Some objects can apply a debuff that grants immunity to charm.
 * The Shaman Tremor Totem removes charm effects.