Magically Enlarged Space

A Magically Enlarged Space, usually called an MES, is a spatial enchantment.

Uses
MES's are magical spaces whose interior dimensions extend past the outer ones. They act as a domain of the caster, where the caster can make things from their imagination.

The incantation is Maxim Spacio Intero

Users
Khioneus Nevula used this on his room to make it how he wanted. Acutorias Nevula may have used this spell to make Neurazia. Angeline may have used this to make the cave she put the sanguinastone in.

Trivia

 * "MES" is pronounced like "mess"