Time Lord's Regalia

2 pieces: (2) Set: Your Arcane Blast has a 100% chance and your Fireball, Pyroblast, Frostfire Bolt, and Frostbolt spells have a 50% chance to grant Stolen Time, increasing your haste by 1 for 30 sec and stacking up to 10 times. When Arcane Power, Combustion, or Icy Veins expires, all stacks of Stolen Time are lost.

4 pieces: (4) Set: Each stack of Stolen Time also reduces the base cooldown of Arcane Power, Combustion, and Icy Veins by 5%.