I agree with you about PCs being tempted. I have read the suggestions in this thread and I have thought about it, but I can't come up with a rule I really like. The big problem IMO is that 2e D&D had such a nice tool for giving defilers greater power, that is the experience chart. It is really hard to create something similiar in 3e (I have tried) and 4e seems to have the same problem.vagabundo said:I've been thinking about this too, but I am interested in the PC Arcane casters being tempted by defiling, that will only happen if there is a mechanical benefit.
If it does not bother you then it would be simpler to have as fluff or as mechanics for the NPC only. It could always be introduced at a later stage for PCs anyway.
My image of preserving is that is a way you learn to do magic. It's not that it's more difficult per spell you cast, it's that it's more difficult to master spells the way a preserver masters them. In 3e you couldn't mess about with experience charts, the only thing worse than a 3e wizard was a 3e wizard that advances faster than everyone else.
4e presents an entirely different problem. Now that arcane magic isn't inherently more or less powerful than what the other classes get, nerfing or boosting wizards could be a real headache.
That's why I arrive at the conclusion that defilers are hosed compared to preservers. There is no mechanical benefit being a defiler, except if you are fighting plants, but that doesn't have to matter since defilers will be NPCs anyway. The NPCs are mine, I don't care if they are hosed, the players don't care, therefore there isn't a problem.