And when considering augmenting items (RoI, RoF, etc.): Augmenting items only affect those items which your mental perspective creates, therefore they do not work on rods/wands/etc.; as these augmenting items attunes your mental perspective/ body energies to better harbor these energies, and their flow. It does nothing for fixed objects like wands, rods, and horns.
I do not agree with this... Magical devices indeed use its own energy, but it's the caster who unleashes the power inside it, so if he is aligned to some element, it should in some way affect his ability to use magical device... Ask yourself: should someone who is denied some element be able to use spells belonging to it from a magical device but not to cast it normally?
Anyway as I said... this is all fantasy so its on the mythology creators to create any system they want...
Maybe MT wants magic as powers provided by some sexy fairies in some other dimension
