SR Super Rare Curse of Dragon, the Cursed Dragon X DARK Level 5 [ DragonEffect ] ATK 2000 DEF 1500 If this card is Normal or Special Summoned: You can add 1 Spell/Trap from your Deck to your hand, that specifically lists the card "Gaia the Dragon Champion" in its text
You can pay 4 mana to cast it, or you can pay 4 life if you control a swamp
You may shuffle
Dont Call it a Comeback Flashback: Conflagrate, Devils Play, Dread Return, Faithless Looting, Rolling Temblor, Sever the Bloodline, Shattered Perception, Traitors Clutch Flashback is another beloved mechanic that came from Odyssey block
without further ado: THE YKAI ARCHETYPE Deck Monsters Inari, The Kitsune Ykai We have the ace monster himself
3 Ancient Gear Frame Ancient Gear Frame is one of the main searchers for the Archetype