Domain

You create a Domain; a personal demiplane tailored to your whims. The Domain must be connected to a physical place in the realm it was cast in within 15ft of you when you cast this spell. It can be anchored to a door, or other entryway such as the mouth of a cave, that acts as an entryway. The entryway can be no larger than 15ft on a side, and no smaller than 5ft on a side. A creature can use this entryway to enter the Domain from one direction only, and can use the entryway to exit the domain by leaving the way it came in. You choose where in  the Domain the entryway connects to when you cast this spell. The entryway is invisible, and can only be seen or detected by an effect that allows one to see the invisible.

The Domain is 1 mile square. You choose each of the following when you cast this spell. You can change one or more of these aspects by casting this spell again while within the Domain.

Borders 

• You can choose to have the borders of your Domain be a veil of mist and fog, by which any creature who attempts to traverse finds themselves turned around.
• You can choose to have the borders of your Domain loop back into the domain  from the other side. Creatures who attempt to traverse the border find themselves approaching the Domain from the other side, and creatures who fly too high find themselves approaching the Domain again.

Time and Seasons

• You can choose to have time flow normally compared the the anchored realm, twice as fast, or half as fast. While in the Domain, this effect is imperceptible. 
• You can choose for your Domain to have normal seasons, one season, extended seasons(doubled), or diminished seasons(halved).

Day and Night

• You can choose to have normal day/night cycles, only day, or only night.
• You can choose to have the illusion of a sky for which celestial objects appear within and move, or Domain-wide illumination with no apparent light source.

Magic

The Domain can have normal magic, heightened magic(as if under the Distant Spell, Extended Spell, and Heightened spell metamagics), or no magic(as the Antimagic Field spell)

Gravity

The Domain can have normal gravity, half gravity(everything is half as heavy, counts as one size smaller for pushing and shoving, and all creatures are effected as though under the Jump spell), no gravity(any motion or movement in a direction is continued until an opposite force is applied or an obstacle encountered), or varied gravity(you choose where what gravity is in effect).

Other Details

You may fill your domain with any structures, objects, and vegetation you desire. The Domain can be one solid landmass, a series of floating islands in a void, or have no landmass at all; a void. You choose the shape and depth of any landmasses.

Anything anyone attempts to take outside the domain refuses to exit the entryway, or disappears(your choice when you cast the spell). The objects, structures, and vegetation are real. Any food created by this spell gives nourishment while in the domain, and sustains as any other so long as the creature waits 1 hour before leaving the domain.

If a creature attempts  to create a portal to your Domain, such as through the Gate spell, you are immediately aware and can choose to have the spell or effect  fail. This feature has no effect if someone enters by way of an effect such as Planeshift, where no portals are created.

When you cast this spell, you must enter the Domain within 1 minute or the spell ends.

This spell also ends if you leave the Domain, or die. When the spell ends, all creatures, objects, and structures not native to the Domain are expelled violently from the entryway, dealing 6d6 bludgeoning damage to each creature and objects, and reducing buildings to rubble.