Transdimensional Expansion

You magically expand the dimensions of an existing container, room, or otherwise fully enclosed space beyond its physical limits. Select an existing physical space (no larger than 125 sq ft.) with at most one single point of entry such as a lid, door, window or flap, (no larger than 10 sq ft), and with a solid border (no transparent walls, windows, etc.). As a part of this spell, the caster must inscribe runes around the opening and the borders of the space to maintain its external structure. The interior dimensions of that space expand by up to 5 feet in any direction that you choose as the spell takes effect, warping to accommodate any items or creatures inside.

When the spell ends, the space returns to its normal size and any items or occupants unable to fit in the original space are softly ejected through the opening. If there is no opening or the objects cannot fit through it, the items or creatures are scattered randomly in the Astral Plane as determined by the GM.

Casting this spell in the same space every day for 30 days makes the effect permanent; further castings can be used to expand an existing Transdimensional Space beyond its size provided that it still has a single exterior border with no more than one point of entry.