Uhm . . . I don't think that's an anime story, so it should be alright. Then again, I know they originated with Zexal, which was the one anime I didn't keep up with (Yuma was too annoying). Only thing I got as being rare from that were the one-of-a-kind Numbers. Unless someone else says otherwise, I'll say it's alright. Lemme guess: planning an Xyz Deck?

@Scar: Yeah, but they work really well in Rank 5 Xyz Decks, so that was my initial assumption.