Diablo – Why does Haunt (Consuming Spirit) Slow

diablo-3diablo-3-witch-doctor

I am using Haunt with the Consuming Spirit rune. When I cast this on an enemy, the word "Slowed" appears next to the enemy. Why is this?

Character profile on battle.net is here.

Best Answer

All Haunt runes deal Cold damage, which has a secondary effect of chilling (slowing) enemies.

The curiosity of the "Grasping Spirits" (also) slowing enemies is noted here.