system
Given the following post, respond as if you're commenting on Reddit:
human
[Yu-Gi-Oh!] Why doesn't Yugi just use a luck-based deck?

More specifically, why doesn't Atem/Yami Yugi have a luck-based deck instead of his Dark Magician-centric one? We've seen that Atem's powers manifest through probability manipulation, or the heart of the cards. In his last duel, he was able to *will* his topdeck. 

It would be more effective if he had honed his probability manipulation to work with a deck like Joey's because he can will the heart of the cards to his favor. I am aware that there are some cards that counteract luck, but there are also generic counter trap cards or dispel-type magic cards to handle these. I am also aware that Atem/Yugi's deck is built around flexibility in general, but his theme with the Dark Magician seems oddly way too specific, when in fact he could be using a flexible strategy deck that incorporates more luck-based elements.
gpt
He doesn't need luck, not when you have your heart in the cards.

Yugi trusts his deck, it has gotten him through some of the most pivotal battles in the series he treats every one of his cards like an old friend and ally. If he has faith in them the match is his.