Clara’s Alter Demiplane

You permanently alter one aspect of a Demiplane you are familiar with in one of the following ways: 

• You alter the material that the walls of the Demiplane are made of from wood to stone or from stone to wood.

• You alter the dimensions of the Demiplane expanding the interior space by 30 cubic feet.

• You alter the Demiplane to reflect the environmental conditions of your choice, such as a temperate spring day on the Material Plane. You can also change the Demiplane’s light level (daylight, bright, normal, dim, or darkness). You may instead of a single change set a number of changes to repeat themselves over a span of time, such as a day night cycle or the seasons of a year.

• You alter the gravity within the Demiplane to heavy (half carry weight, double fall damage), normal, light gravity (double carry weight, half fall damage), or no gravity. You can also change the orientation of the gravity within the Demiplane to a direction of your choice, alternatively you can change the orientation to be objectively directional (effectively making the walls and roof act as floors), or subjectively directional (efficiency granting a choice to each individual once per round on how gravity affects them if at all, with a DC 16 Wisdom check a creature can float and move freely at a speed of 5 feet per point in wisdom).

• You alter the Demiplane making it magically secure against sensors created by divination spells so they can't appear inside the Demiplane and creatures within the Demiplane can't be targeted by divination spells, also teleportation and planar travel is blocked within the Demiplane for everything except you and those you designate, you can also designate specific conditions that allow entry such as speaking a pass phrase or being a creature of a specific type, meating those connections also allows assess the Demiplane like normal. In addition only you and those you designate can further alter the Demiplane with this spell.