Energized Eye Orb (3.5e Equipment)

Energized Eye Orb
 This stone eye is carved from a mysterious red stone. At times out of the corner of your eye you can almost see it twitching around. It acts as the focus, and duplicates the effects of, astral invader as a 1 round action. You can use it at will.

There are energized blue eye orbs which are granted by some deities of justice and punishment, which usually have restrictions on who you can use the eye upon (such as only evil people, or heritics to the god's dogma). Rarely there are also energized black eye orbs which are only created by the spirit of a murdered being whose spirit cannot rest. They have a single purpose to invade their killer and cannot be used for anything else.

Cracked forms of these minor artifacts exist. They can be used only once before crumbling into dust. The energized black eye orb crumbles once its vengeance is complete.