As I browse some of the more popular cards in the set on TCGplayer, Im seeing an extremely small amount of copies in stockit kind of reminds me of Alpha in how sparse the inventory is
That said, in order to fight you need Energy cards
Esika makes for a great legendary Gods deck, utilizing Prismatic Bridge to get them into play, and the World Tree land which can grab all of them out of your library, which makes for a very fun build
Rewards: 36x Wonder Hourglass, 12x Pack Hourglass, 10x Shop Tickets Mythical Island Tale of Adventure Collect Mythical Slab, Budding Expeditioner, Mew ex, and Celebi ex's immersive card Reward: Celebi (emblem) Dex Missions As you register new cards from Mythical Island in your card dex, you will earn Emblem Tickets that can be exchanged for a new Mew Mythical Island emblem
Stealing the land for you
65/102 Staryu