Omegahugger
Inattentive Idiot
I would assume Anime rules, if any.Assuming we're playing with mostly non-anime rules, this and red eyes are the only candidates that are any use. Soul exchange can only carry the game so much, and getting useless seven drops isn't a good idea. Maybe my mindset is wrong for the anime timeline, but blue-eyes and barrel dragon are really worthless you'd have to do some wasteful moves to even get them onto the field.
Dueling: This will be mostly automatic, so the QM doesn't bog down the quest with single-round updates. You'll decide on a plan and the character will uphold that plan. The Heart of the Cards is real and depends on your willpower, desire, and belief, as well as the stakes. Your Deck will be up for revision, but keep in mind - how dueling works in this world is far different from how it works in yours.