its easy

[ghost in the dark]

get the celestial weapon to save you using the dark matter no break damge limit and use it on ribben [the celestial weapons are in mushroom rock x2,calm lands x2,where you get anima,thunder plans and luca]

[qwertysaur]

To get break damage limit you need to have both the Crest and the Sigil for that character. also Ribbon is only available in the PAL region games. :p