Tier 2 drops mainly in Blackwing Lair. The pants drop from Ragnaros in the Molten Core. Netherwind Regalia is the Tier 2 Raid Set. It contains 8 pieces. Has set bonuses at 3, 5, and 8 pieces.
Wearing more pieces of this set will convey bonuses to your character:
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 to reduce the cast time of Arcane Blast, Fireball, and Frostbolt by 10% for 10 sec.
Here you can buy Tier 2 Mage Netherwind Regalia for EU or US Servers.
You'll get guide for getting Tier 2 Mage Netherwind Regalia
• You'll be able to get Mage Netherwind Regalia
• Mage Netherwind Regalia set