Forum:Question about Number C65 and Number C96

So the card says " If this card has "Number 65: Djinn Buster" as an Xyz Material, it gains this effect..". My question is how would Djinn Buster even be its Xyz Material to begin with? I thought Xyz monsters cant be used as Xyz Materials? Help clear this out for me. Thank you. :]Death At A Rave! (talk • contribs) 21:44, October 28, 2013 (UTC)