However Yuamu began discarding cards that didn't fit her Deck, revealing she snuck a booster pack into her Deck before Yuhi lit the arena, and she summoned "Red-Boot Boost Dragon", whose DARK Attribute and effect to return her monsters to her Deck countered Sky's "Golondrinas Prison", allowing her to defeat them
Your Pokmon deck should contain three main types of cards: Pokmon, Energy, and Trainer.
GR Gold Rare Eater of Millions X DARK Level 1 [ FiendEffect ] ATK
Now that you have "Gladiator Beast Bestiari" and another "Gladiator Beast" monster on the field, you can return them to your Deck to Special Summon "Gladiator Beast Gyzarus" who will destroy 2 cards on the field
With just about every card available to a deck builder, Commander is truly a blank canvas, and any idea is at least worth trying out
I also want to mention that colored or color aligned equipment might be a good tool to shows which color(s) support the archetype