This may be surprising for some of you...
The spells Protect and Shell boost stats.. however it is
not guarenteed if your Will/Spirit is low (stares at Tellah

).
In order to ensure perfect success, a Will/Spirit of 64 is required for100% success (at least for Protect... I bet Shell is on the same boat). The method for which I tested this was Yang's Gird/Endure command. I tweaked his Will to modify the chance of success. If Yang fails to execute Gird/Endure because he has maxed defense, it would determine the required Will for success.
Fuck Tellah and his lame magic power.
