Fiction:Iluvii Realm

The Iluvii Realm, also known as the Psionic Realm, the Mental Realm or the Mental Universe, is a parallel dimension to the Prime Universe composed entirely of Psionic Energy. All psionics powerful enough to go beyond the perks of telepathy and telekinesis is able to access it and draw power from its unending currents and fonts of raw psionic energy. It passively feeds and draws sustenance from those who access it, and thus great focus and psionic affinity are needed, lest the individual will be consumed and be left as an empty shell.