[Other] Immmolation Aura granted to early

[Grakazela]

• [Location, Faction, Race] Demonology Warlock, Horde, Undead
• [Name, Type] Metamorphosis: Immolation Aura, passive talent
• [Problem Description] hellfire always changes to immolation aura in metamorphosis
• [How it should work] spell should remain as hellfire until acquiring level 62 and unlocking the passive that converts it