Increases your damage dealt by 100% and damage taken by 50%.
Pet Battle: [25] Zaralek Cavern
Drop: M'uru [??+]
Zone: Sunwell Plateau
Approximate Drop Rate: 1 in 25
Pet Battle: [25] Zereth Mortis
Drop: Eye of the Jailer [??+]
Zone: Sanctum of Domination (Mythic)
Approximate Drop Rate: Unknown
Drop: Reliquary of the Lost [??+]
Zone: Black Temple
Approximate Drop Rate: 1 in 55
Drop: Aerto
Zone: Ardenweald [50-60]
Drop Rate: 1 in 1
Drop: Deifir the Untamed [61]
Zone: Ardenweald
Pet Battle: [25] Ardenweald
Pet Battle: [25] The Waking Shores; [25] Ohn'ahran Plains; [25] Thaldraszus
Vendor: Patchu
Zone: The Azure Span
Cost: 500 (unlimited supply)