Quote Originally Posted by Segev View Post
The trouble with "oh, only if they're higher level than you were when you cast permanency" is that you're going to have to re-pay for it every level to keep "current," and even then, you're hoping your foes aren't boss-types who out-level the party. The longer it's been since you cast your permanent spell, the more likely it is that even a mook-wizard compared to you can successfully dispel it.
That is true, but the damage or offset will be determined more from what kind of campaign and level of characters, than anything else is my experience. Take my level 32 wizard... not too many in FR, who will be dispelling that... And the ones who can, well they are the ones I try to avoid. But I do agree, that it can become very very expensive in exp very quickly!