While you're in the Subterra, watch out for those Necrofiends. They love doing Phantasmal Gaze, and if all three of your guys get confused from it, then your entire party can get wiped out. Put Bowline Sashes on whenever you encounter them. If you have a Ribbon, always keep it on someone when you're down there. You don't want three or more Necrofiends gang up on you, and all of them be doing Phantasmal Gaze simultaneously. and then have tons of zombies along with them putting tons of status ailments on your guys.