[itMFtis]

As far as non-limited release items, I recommend 5-starring chapter 3 for the golden screaming eagle. It's probably the most damaging weapon in the game that isn't going to cost you a turn or have some other huge disadvantage. Golden tyrant blade (chapter 9) is another comparable item that can act as your main damage dealer.

Magnetic field generator is another item that finds it's way into my weapon slots from time to time. It's found in 4.4, epic Magneto fight. Good one to farm cp too.

Only for killing (9.4 epic boss) is pretty good as it can't be defended/protected against. Wont be that great in pvp because people can get around mental anguish.

Dark Sigil (9.6) is good. I actually like it more for it's weak point property than the fire/dark void.