Editing Tarrasque (section)

===(PF) How to imprison the Tarrasque in an inescapable prison===
*Create a [[Demiplane]] and make it permanent
*Make a permanent magic portal to it
*KO the Tarrasque and planeshift to that plane with it
*Cast Imprisonment on it or at least keep it underwater to stop it from waking up.
*Cast Greater Create Demiplane to make this plane have the dead magic trait, blocking all planar travel except the portal.
*Leave the plane and destroy the portal, ideally on both sides (Remote detonation of explosives, even as simple as throwing a lit torch through the portal, sending Constructs to do it or making the portal on a separate, non-permanent, demiplane are the easiest way to accomplish this.). If you really want to be sure, you never make any portal in the first place then get off by killing yourself to pop up in a Clone on the prime material or have a construct use a magic item to bring the KOed Tarrasque to dead end plane.

This still requires you defeat it the old fashioned way though. Fortunately it's no longer the most powerful monster: That would be Great Cthulhu, who, while not a god, may as well be one. Bestiary 6 had a fetish for unkillable monsters above CR 20 and now we have giant [[Qlippoth]] lady-mushrooms with a reach of over a mile Giving birth to Quippoths from blisters.