Diversion

Prophecies Campaign:
Skill Quests: Skill Trainers who will teach this skill before it is unlocked:
 * Unnatural Creatures (Serenity Temple)
 * Captain Osric (Yak's Bend)
 * Dakk (Ember Light Camp)

Factions Campaign:
Skill Trainers who will teach this skill before it is unlocked:
 * Zytka (House zu Heltzer)

Usage Notes
Diversion dumps additional recharge time on top of the skill's innate recharge time, thus providing a one click counter to almost every skill if the opponent that the target willing to use. Diversion is best used to slow down a fast activating skill for an enemy. This has many powerful applications:
 * Shutdown a monk's Orison of Healing. Orison does not heal a lot, but its power is that it casts quickly and recharges quickly (2 seconds). An Orison that takes 50 seconds to recharge is useless to a monk.
 * Take out an elementalist's quickly recharging attack. Most elementalists will have a single spell for doing damage repeatedly while their big nuking spells recharge. For example, Aftershock for Earth Magic users, or Flare for Fire Magic users. Diversion can make these take nearly a minute to recharge.
 * Taking out a potential threat from warriors and rangers. Warriors have skills like Savage Slash and Disrupting Chop and rangers have skills like Savage Shot and Concussion Shot that can greatly bother a Mesmer by interrupting him/her. A mesmer can use diversion on them to make those attacks (which are dangerous because they recharge quickly) take a minute to recharge and thus become far less effective.
 * Give the opponent a lose-lose situation by combining with Wastrel's Worry: A choice between taking a nonnegotiable amount of damage or shutting down one of his or her skills for long time. The decision must be made quickly, which may force your opponent into a mistake. Your opponent may choose to wait out the duration of Diversion rather than shut down a skill, or they have to quickly choose which skill to sacrifice. Diversion can put sufficient pressure on an opponent to do nothing, making Wastrel's Worry a more efficient damage dealer.
 * Diversion can be useful against a Touch Ranger. By shutting down their ability to spam between Vampiric Touch and Vampiric Bite, it prevents them from healing as much and makes it easier to kill them.