Hiveplanes

Hiveplanes are pocket dimensions that range in size from a small city to an entire galaxy. They are controlled by special Minds known as Planeminds. Defeating or otherwise destroying a Planemind causes its Hiveplane to rapidly shrink into a singularity and then consume itself.

The list of Hiveplanes, their Planeminds and their size is:
 * The Artefact Plane - Akalai Castmind - Planet