Turbo Dueling is a new style of Duel Monsters play that mostly follows the regular rules, but spices things up a bit with a card called Speed World
Decidueye Golisopod is another option, but you already have enough Golisopod-GX and Decidueye-GX decks in the gauntlet as is

Strengths for high-end: Massive buyer pool means maximum exposure Auction format can drive competitive bidding above market price Best Offer allows negotiation on Buy It Now listings Extensive buyer base of sports card crossover collectors who spend big Authentication service for cards over $500 (eBay partners with CGC for this) Limitations for high-end: Chargeback risk is real and eBay's seller protection has gaps for high-value items 13% fees on a $5,000 card = $650, which is painful Buyer-friendly dispute system can be exploited Listing quality varies wildly you're competing against professional dealers and random sellers Critical eBay tips for high-end: Always ship with signature confirmation (required by eBay for items over $750, but do it for anything over $500) Use eBay's promoted listings to get more visibility 2-3% of the sale is worth it if it attracts more bidders Document everything: photograph the card, the packaging process, the shipping label

Part of this is due to art and other concerns, but a large portion of the value comes from the fact that owning a first-edition foil of a valuable card is just very cool
Number 113 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Pioneer, Standard Rulings (6/7/2024) Once a permanent you control leaves the battlefield, Aether Revolt's revolt ability will apply to noncombat damage dealt by sources you control until the turn ends or Aether Revolt leaves the battlefield, whichever happens first