How Nibelung proc Val'kyr from mage spells.
Val'kyr damage and behaviour.
Is Nibelung any good for mage in ICC?

Single target spells: Fireball, Frostfire Bolt, Pyroblast, Fire Blast, Arcane Blast, Arcane Missiles, Frostbolt, Ice Lance
AoE spells: Flamestrike, Blast Wave, Dragon's Breath, Blizzard, Arcane Explosion