Verdant Sphere

A Verdant Sphere is a magical item used almost exclusively by blood mages such as Kael'thas Sunstrider.

Description
This powerful arcane artifact appears to be a sphere of green magical fire that hovers around the owner in much the same way an ioun stone orbits its owner's head. Legend has it the orb siphons a portion of the essence of every evil outsider slain by its owner. The orb draws on the essence of these demons for its own powers, the spirits writhing in torment within it for all eternity. The reason it is most sought after by arcane casters, however, is its ability to enhance spells. All fire spells cast by the owner have their range widened, increasing the area of damage.

Dropped item
The Verdant Sphere is also an epic quest-beginning item which drops from Kael'thas Sunstrider in the Eye. It begins, which gives a choice of four rewards. It is worth noting that three of the rewards are named for one of the advisors you fight with Kael'thas. They are: