The Banishment spell states the following two things:
If the target is native to the plane of existence you’re on, you banish the target to a harmless demiplane.
If the target is native to a different plane of existence that the one you’re on, the target is banished with a faint popping noise, returning to its home plane.
But what if Banishment is cast within a demiplane?
My guesses are the following:
- Native: only the creator of the demiplane is considered native and is temporarily banished to another demiplane for the duration of the spell.
- Non-native: anyone not the creator of the demiplane is considered non-native and is sent back to their original plane of existence.
I should clarify that I do not just mean demiplanes created by the Demiplane spell, but also demiplanes that are far more vast and actual campaign settings in their own right.
Am I to believe that under RAW, anyone and everyone would be kicked out of such demiplane settings, including their creators and inhabitants who were born there? It seems rather game-breaking.
Ultimately, the question is, under which circumstances, if any, can someone be considered native to a demiplane?