Require Therazane reputation.
Available at Honored reputation:
Available at Exalted reputation:
Available at Revered reputation with their respective factions.
Arcanum of Hyjal – 60 Intellect, 35 critical strike rating
Arcanum of the Earthen Ring – 90 Stamina, 35 dodge rating
Arcanum of the Ramkahen – 60 Agility, 35 haste rating