Frustration

Trivia

 * Currently this skill deals damage if the target is interrupted in any way. As such, it can be effectively used with skills such as Clumsiness, Signet of Clumsiness and Dwarven Battle Stance, as well as the more obvious spell interrupts.
 * Skill balancer Isaiah Cartwright, employee of ArenaNet, appears to have been the model used in the skill icon.