Thunderclap

Description
For 8...18 seconds, if target foe is struck for lightning damage, that foe and adjacent foes are knocked down, and you lose 15...9 Energy or Thunderclap ends. This is an elite skill.

Acquisition

 * Abaddon's Mouth (Mission): Optimus Caliph (Mursaat)
 * Iron Mines of Moladune (Mission): Kratos the Foul (Mursaat)
 * Iron Mines of Moladune (Mission): The Inquisitor (Mursaat)
 * Ring of Fire (Mission): Maida the Ill Tempered (Mursaat)
 * Thunderhead Keep (Mission): Chrysos The Magnetic (Mursaat)
 * Ice Floe: Mursaat Elementalist (look for boss glow)

Usage Notes

 * With a lightning wand and good attack timing, you can effectively keep another player on the ground for the whole duration of the hex (assuming no hex removal). This won't leave you with much energy in the end though, if any at all.
 * Usefulness in PvE is very dependent on the monsters you assume you'll encounter, keeping in mind that some, such as Giants can't be knocked down at all.

Related Skills

 * Earthquake
 * Lightning Surge
 * Meteor
 * Meteor Shower
 * Mind Shock
 * Shock
 * Water Trident
 * Whirlwind
 * Spike Trap (Ranger)
 * Backbreaker (Warrior)
 * Bull's Charge (Warrior)
 * Bull's Strike (Warrior)