While the unique affix may seem extremely potent, it actually only works within a very narrow distance (considering the Storm Armor has a maximum range of 35 yards), so typically a ranged kiting Wizard will benefit most from it.
As of patch 2.4.1, it had no description, being the only equippable Legendary item without one.
Stats (Level 31)Edit
Halo of Karini
Originally, the graphics of this ring were used for Ashnagarr’s Blood Ring (which had its affix moved to Ashnagarr's Blood Bracer).