Crackling

Crackling is an Invention perk that periodically zaps the target for 50% ability damage per rank in PvM, or 10% per rank in PvP. The damage done is magic regardless of the weapon's combat type. It activates every 60 seconds in combat. Damage modifiers are taken into account when calculating the damage; for example, using Ancient Magicks against Muspah will cause Crackling to deal double damage.