Flail

Acquisition
Skill Trainers:
 * Dau (The Mouth of Torment)

Hero Skill Trainers:
 * Hoju (Gate of Torment)

Signet of Capture:
 * Onwan, Lord of the Ntouka (Arkjok Ward)
 * Churrta the Rock (Jahai Bluffs, not during Eavesdropping)

Related articles

 * Adrenaline
 * Adrenaline skills quick reference
 * Movement speed quick reference
 * Attack speed skills quick reference