Permanent Portable Magnificent Mansion?

[Samloyal23]

Well, almost. Reversing aging reverses aging. Al aging, all aspects of aging. The modifiers are by age category, so when you lose the age category you lose the modifiers.

But consider this option: Decide when you set up your demi-plane that everything ages at a normal rate, in whichever direction it takes to reach the middle of your species "young adult" age category. So older people get younger but children mature normally.

Add a few conditions: Anyone who dwells here gains 1 stat point in all stats per year.

Now add the previously mentioned size modifier, where anything entering is reduced in size, and anything leaving grows in size. Include spell areas and ranges in the size twist, and make the factor 5280 to 1, just to keep it simple. You world is 360 feet across, if measured from the outside. It's 360 miles across if measured from the inside.

The entire place is under a permanent Plant Growth effect (the "Enrichment" variety, so forests are always lush and crops are always plentiful.

You'll have to plant those forests and crops, stock the streams and lakes with fish and import some wildlife, but you could establish some really nice retirement property there.

I see no reason you cannot define the the reversed aging as physical age only. You need not become less wise and perceptive and educated because your body is rejuvenating.

 

[Shaghayegh]

Ahh Genesis, one of those spells that causes issues because people don't look at other forms of it.

Sadly, the Spells SRD were not updated with the errata, but the Psionics version was properly detailed as to NOT allow for Time traits, or specialized features (at best you can make simple terrain of hills and valleys of inert dirt).

Blech! More evidence of how much the 3E development team messed up everything created for 2E. Demiplanes were created for the Ethereal Plane, being produced naturally from over-dense areas of protomatter. The Astral Plane was a 0-dimensional non-space. You cannot create density and fold space when there isn't any! Sod the 3E demiplane rules!

 

[Samloyal23]

Blech! More evidence of how much the 3E development team messed up everything created for 2E. Demiplanes were created for the Ethereal Plane, being produced naturally from over-dense areas of protomatter. The Astral Plane was a 0-dimensional non-space. You cannot create density and fold space when there isn't any! Sod the 3E demiplane rules!

Exactamundo! The 3E rules turned everything planar to blek, sod all of it. Stick to the 2E rules and adjust any numbers for 3E. Make your demiplane any damned way you want, that is why they exist!