When the banlist drops and the new format is in that state of limbo where no one really knows what the new best deck is, I like to just sit back and play some casual games with some bad decks. Gaia is a deck that centers around fusing into one of your Gaia the Dragon Champion variants for a swift OTK. The way the deck achieves this is all about grabbing both
Gaia the Magical Knight and
Curse of Dragon, The Cursed Dragon (I can never get over that name. It's so stupid) Gaia summons itself and specials Cursed Dragon to search for your
Spiral Fusion, and under the right conditions, you will win the game from there. Basically you go for
Gaia the Magical Knight of Dragons and oftentimes it's enough for lethal.
Galloping Gaia and
Artillery Catapult Turtle search for either of the two resources needed, but
Gateway To Chaos only searches Gaia.
Extreme summary of how the deck works but it's basically everything you need to know