if you can get to sin then the best place to train is inside him before you get to the last boss. Take the airship to inside sin then run to the next save point which is by the stairs then go up the stairs run through that bit to the next save point and then do in reverse order until you have the ability needed. also a tip for beating valafor would be to use both anima and the magus sisters who can kill them by themselves also as a last ditch attack use yojimbo and pay him enuogh to use zanmato from Deano
