Thunderclap

Summary
For 8-18 seconds, the next time 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.

Where to Aquire
Chrysos The Magnetic (Thunderhead Keep), Maida the Ill Tempered (Ring of Fire), Kratos the Foul (Iron Mines of Moladune), The Inquisitor (Iron Mines of Moladune)