Weakness

Vendor: Shoak , Blind Wunja

Zone: Nazmir

Cost: 500 (unlimited supply)

Vendor: Dodger (A)

Zone: Boralus

Cost: 500 (unlimited supply)

Requires: A Shady Message

Vendor: Orix the All-Seer

Zone: Antoran Wastes

Cost: 1000 (unlimited supply)

Vendor: Falara Nightsong

Zone: Thaldraszus

Cost: 2750 (unlimited supply)

Drop: Box of Collapsed Reality

Approximate Drop Rate: Unknown

Drop: Eternas the Tormentor [60]

Zone: The Maw

Approximate Drop Rate: Unknown

Pet Battle: [13-14] Tanaris

Pet Store 

Promotion: World of Warcraft Collectors Edition

Drop: Grand Proctor Beryllia [??+]

Zone: Sanguine Depths (Mythic)

Approximate Drop Rate: Unknown

Drop: The Stone Guard [??+]

Zone: Mogu'shan Vaults

Approximate Drop Rate: Unknown

Drop: Viscidus [??+]

Zone: Temple of Ahn'Qiraj

Approximate Drop Rate: 1 in 4

Drop: Eredar Twins [??+]

Zone: Sunwell Plateau

Approximate Drop Rate: 1 in 20