I am so stupid, months after I finish publishing the story, this is what the game should've been like, forget the whole thing with an automatic loss with Osirus......this is what the end SHOULD'VE been like:

Yami draws Osirus. He says: I win.

Voldemort: What?! (looks at card) but that...isn't that the most powerful card in your deck?

Yami: (looks surprised) How did you know?

Voldemort: I always know, and now...I win.

Yami: (shakes head) No, that card is only powerful when used in a regular game, with a drawn hand. As neither of us have a hand, just a discard pile, in this game, Osirus is the weakest card. It has an attack power of 0. You lose.