Cyronax
Explorer
Aaron L said:It exists beyond time and space!
But seriously, in game? I believe it is as old as the Planes themselves, as old as all of Creation. I believe that the official explanation of the Far Realm is that it's the very edge of Reality, where the Planes start to bleed off into non-existence (Nihilo, or the Outer Dark, in my campaign), and Reality itself begins to unravel and peel apart in layers like an onion.
At least I really seem to recall reading that somewhere. Maybe I've gotten it confused with how I use it in my game, but I'm pretty sure that's the official description of the Far Realm.
Aaron,
I think you have just quoted one of the alternate planar setups for Limbo. The Manual of the Planes gave a variant Limbo that was worded very similar, and had Limbo serving as a sort of meta-plane (instead of just the CN cog on the Great Wheel). The Far Realms' lingo doesn't refer to it as the outer edge of reality, but its a concept that is very cool nonetheless.
IMC, the Far Realm and Limbo (in the variant mentioned above) are merged and serve as the backdrop to reality. I essentially have the Prime surrounded the two Ethereal Planes, which contain multiple demiplanes of varying sizes. Some demiplanes are the size of Outer Planes in RAW, but still operate like the standard demiplane, in that they have limited portal access. The elemental planes don't exist, being component parts of the Prime. (Plane Shift as a spell is non-existent IMC.
Cheers,
C.I.D.