Obi may be a talented fighter but he’s not going to be stopping the self proclaimed king of dueling. Luke has a considerable amount of monsters at his disposal and while they may not be the most powerful ones around, they are hard to beat as an army. Obi isn’t prepared to handle monsters and would likely go down to one of the first ones. Their attack range and durability are just too formidable. Luke (Yugioh) wins.
Luke (Yugioh) vs Obi (Snow White)