Also to make things "fair" if the spell is used cross-class or casted by/on someone under optimum level the effect is 5 minute duration with a POSSIBLE reduced effect?
What reduced effect?
You mean that theres an effect right now and you want this to be nerfed on non mage classes? :P
Anyway joking aside, seriously, make spells working!
I could notice the damage decrease on my charactr in FF11, but I cant even see the changes in this game...

Oh and no!
Shell and Protect should remain 2 different spells, never combine them!