Thunderclap

Acquisition
Signet of Capture:
 * Chrysos the Magnetic (Thunderhead Keep)
 * The Inquisitor (Iron Mines of Moladune)
 * Kratos the Foul (Iron Mines of Moladune)
 * Maida the Ill Tempered (Ring of Fire)
 * Mursaat Elementalist (Boss) (Ice Floe)
 * Optimus Caliph (Abaddon's Mouth)

Related skills

 * Spinal Shivers/Shivers of Dread