The Great Rift
Touchstones are magical artifacts that have been found within every demiplane connected to the material plane by a Rift. First discovered by Garomonde and his associates, the Touchstones were seen to have tremendous power, and in a number of instances, Banished all material plane natives to their home plane and effectively closing the Rift between planes.
Some Observed Touchstone Traits
*There have been more than 1 Touchstone on a single demiplane which all must be ‘activated’ in some way before the Banishment takes place.
*In many instances activation was simply coming into contact with the touchstone which appears to non-planar natives as a colored translucent sphere, but to planar natives it seems to be undetectable.
*Banishment seems almost instantaneous after some disorientation. All non-natives tied to the touchstone activated are banished to their native planes, however this hasn’t been experimented with.