Regalia of the Witch Doctor

2 pieces: (2) Set: Your Lightning Bolt, Chain Lighting, and Lava Beam hits have a 10% chance to cause a Lightning Strike at the target's location, dealing 173 Nature damage divided among all non-crowd controlled targets within 10 yards.

4 pieces: (4) Set: The cooldown of your Ascendance is reduced by 1 sec each time you cast Lava Burst.