Mind Stones

Description
The mind stones are an incredibly powerful artifact which were originally from the Celestial Plane, but were brought through to the Ninth Realm during the Planar Rift. Long ago they were scattered amongst the lands surrounding The City, with only rare and unusual legends telling of their power and origins. They were brought back together by Caelan during A City and used to reverse the effects of another powerful extra-planar artifact The Gloves of Beetle Mind, and save The City and possibly the world. Afterwards the Mind Stones were embedded in a circle in the catacombs beneath The City, which were since collapsed during The Battle of The City.

There are two states of the mind stones, each granting different powers:

Separate:
Even when separated the individual Mind stones have great power. They can be attached to a creature at birth, and over time become fused with their minds. This grants them great wisdom ("awakening" them if they are a species without human-like intelligence) and magical presence.

Instances of this include:
 * Imbriette, the leopard who accompanied Caelan for the last part of their journey
 * The Great Snake, for whom created Snake Canyon and whose for skeleton the place was named, died several centuries ago
 * The attempt of the mother Rock-Bug who fused it to one of her eggs, the mother was slain by Caelan, the rock-hard egg is now a mind stone itself, though the growing bug within was killed when the Mind stones were used

Together:
When all of the mind stones are brought together, and activated by force of will, they create a force with unimaginable power, which can be focused to complete fantastic and impossible tasks. However, the force feeds and is fueled by the life-energy and the matter of the one who wields it, and they are ultimately consumed in entirety by the stones. A mortal has the energy to enact one task from the mind stones, and in their wisdom, they are merciful and will allow the mortal final words before completely consuming their being.

A mortal consumed by the mind stones will not appear in any realm of the dead, for their spirit and soul have also been devoured.

There is only one recorded instance of The Mind Stones being used in this form, and that is by Caelan in the campaign A City.