Six Ancestors Great Seal



The Six Ancestors Great Seal is a legendary device which was used during the Great Monster Wars to seal the Six Ancestors along with Alice the first and is the most powerful seal in existence. However, it wasn't limited exclusively to them. If a being was powerful enough to maintain the seal, like Ilias, then it could be placed on them, as it maintains itself by drawing on the power of the target. So the more powerful the target is, the more effective the seal is.

After being placed on a target, the seal weakens their power to less than one tenth of it and then teleports them into an area of subspace completely locked away from the outside world, rendering them useless.

However, there is a loophole, as discovered by Tamamo, the ancestor of beasts. If the target weakens themselves sufficiently, they can escape the seal. Since it feeds off the strength of the target, if the targets power decreases, then so does the strength of the seal, as it was only intended for use on incredibly powerful beings. After weakening their power the target may create a vessel of themselves in the body of a child they can escape the dimension while leaving their original body trapped inside the subspace barrier. Their power will be at less than one tenth of their original power, but they will retain their mind and memories. It's better than the alternative which is staying locked away in a pocket dimension.

There is only one way of truly escaping the seal, and that's by destroying the power source. But since the power source comes from the one being sealed, the target would have to destroy themselves in order to weaken its power, which is hardly ideal. (I forget how Alice escaped. Someone add this in.)