I had a thought about elementally corrupted weapons and sheaths.
Depending on the factor points put into aura, weapons can either add elemental crits or, as more factor points are added replace the weapons regular crits with elemental crits. When the aura is maxed out (assuming the physical memory spell hasn't been cast), the weapon no longer does normal crits, and the blade is totally composed of elemental energy. The weapon becomes more like a light-saber; the hilt is always there, but the blade only forms when it's wielded.
I thought lower level points in aura should be the same; they're only activated by wielding the blade. So when it's maxed, the blade forms when held, when it's not maxed the blade just charges with elemental energy when held, and is otherwise not 'powered up'.
I realize this kinda makes the Elemental Sheath I spell mostly useless... but it seems messed up to me that a Elemental Champion can create an elemental weapon that he can't carry without the help of someone else to magically enchant his sheath.
Otherwise said champion would have to carry his weapon everywhere, couldn't sheath it to walk, couldn't set it down to sleep and so on.