Your Arcane Blast has a 100% chance and your Fireball, Pyroblast, Frostfire Bolt, and Frostbolt spells have a 1% 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.