Netherwind Crown
Binds when picked up
HeadCloth
107 Armor
+26 Intellect
+7 Spirit
+17 Stamina
+10 Frost Resistance
+10 Shadow Resistance
Classes: Mage
Requires Level 60
Equip: Restores 4 mana per 5 sec. 
Equip: Increases damage and healing done by magical spells and effects by up to 32. 

Netherwind Regalia
3 pieces: Reduces the threat generated by your Scorch, Arcane Missiles, Fireball, and Frostbolt spells.
5 pieces: Increases the radius of Arcane Explosion, Flamestrike, and Blizzard by 25%.
8 pieces: 10% chance after casting Arcane Missiles, Fireball, or Frostbolt that your next spell with a casting time under 10 seconds cast instantly.
Item display is courtesy wow.allakhazam.com.