Netherwind Regalia

3 pieces: (3) Set: Reduces the threat generated by your Scorch, Arcane Missiles, Fireball, and Frostbolt spells.

5 pieces: (5) Set: Increases the radius of Arcane Explosion, Flamestrike, and Blizzard by 25%.

8 pieces: (8) Set: 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.