A simple question about the Forsaken Duration from RoPI: as I understand the rules a spell with this duration becomes an essencial, undispellable part of the spells target. But does that mean you doenst warp because of a constant magical effect like after a Creo Ritual?
I have no answer...but i'll add another question.
If you desicrate a area/room can you use the forsaken duration until it's been "purified"?
Interesting Question, but for my part I would allow to enchant a monastery with a ritual like Bountiful Feast and the Grace duration, so I guess doing the opposite for infernal tainted houses would be ok.
Why not? It sure fullfils the mood, and I see nothing to contradict it.