Quote Originally Posted by masamune1600
Three Adamantoise cards refine into one Turtle Shell, unfortunately. Ten Turtle Shells can refine to an Orihalcon, ten of which refine to an Adamantine. So three hundred Adamantoise cards would, technically, yield Adamantine. You could card mod the Minotaur card into ten Adamantines, but I personally never modify rare cards. Adamantine can be mugged from BGH251F2 at FH, but that's a one-time-only fight. My recommendation would simply be to fight Adamantoise enemies, as they sometimes drop Adamantine as an after-battle item.

300 ACs double-R'd for 1 Adamantine? At least Adamantoise was in there somewhere.