yugioh machina gadget deck Machina/Gadget Machina Gadget Deck - Yu-Gi-Oh!

Fans have already pointed to Strixhaven Stadium as one pre-existing card that would work extremely well with Tidus Cheer ability

Cards that provide net resource disadvantage - say, Small World, for instance - don't have any legitimacy in Endymion, as they are too costly

You want to be able to add on 0.2 of a card or something so that you can fairly balance cards in the low mana cost region

Keep raw in penny sleeves inside a quality binder

(Perhaps you're playing a tribe full of cards like Goblin Ringleader and you're more than happy to trade one for one.) But that's a good baseline to start with

For example, I found a listing for $200 but it's a tradition auction with 3.5 days left and 28 bidders