My question is... is there a list/guide that shows just what items will unlock opponents for the Coliseum? I have been through the Opponent Guide that is posted on here, and it shows some of the older(?) ones... but it did not show at all the ones that are currently in the MC, which I just found. Nor did I realize that a number of the items in the CS also unlock opponents... although I don't think I can yet beat a couple of them. My point is, as a T5 closing in on T6, there are obviously some opponents out there that ARE available (although expensive) that I can beat. Does such a list of items that unlock opponents exist?

has a list here.