Remathilis
Legend
The only issue I could see (if we're using the model of exposure to x = y power) is the idea that it's based around specific triggers that may or may not happen in game. Would that thusly mean the PC is barred from taking that power?An earlier topic of discussion reminded me of something I'd seen before, and I went looking and found this. Spelltouched Feats are from Unearthed Arcana (3.5 version), and they represent the ability for someone to internalize magic after having been exposed to it enough times. Here's an example:
Residual Rebound [Spelltouched]
Sometimes spells cast at you rebound on the caster instead.
Prerequisite
Exposure to spell resistance or spell turning spell.
Benefit
If you roll a natural 20 on a save against a targeted spell, it turns back on the caster as if affected by a spell turning spell. Unlike spell turning, however, the Residual Rebound feat potentially functions against touch range spells as well. Residual Rebound only works on targeted spells that allow a saving throw, so a fireball won't rebound, nor will a power word stun.
So thinking about it, would something like this be acceptable for our "more fantastic warrior"? The idea that exposure to magical energies allows you to perform fantastic feats?
For example: if the fighter wants to take bladeproof skin but has to be exposed to stoneskin and nobody has or can cast it on them, is he forbidden from taking it? Does the DM rig a situation where an NPC or magic item can cast it on them? Would their powers be limited by the foes they fight and allies thru keep? Or do we have it away again as "somewhere in the world a wizard cast stoneskin and the magical particles drifted on the wind until they touched the fighter"? (Or better: I don't have to explain it, I just get damage reduction).