First he uses elements that homage the pagans ("Aeris", "Chiron the Mage"), then the Flood sent by God, and after that its developmental and evolutionary stages, such as floods, the reign of the dinosaurs, the ice age, modern and futuristic times, and the Apocalypse (represented through his Deck Master, "Shinato, King of a Higher Plane")
1 2 "'Batman' and 'Adventure Time' 'Fluxx'"
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Removing Energy from opposing Pokmon or preventing Energy attachment can slow down your opponent's progress, buying you time to set up your board
I also use at least two copies of Acorn Harvest, because it acts as a super Chatter later in the game (preferably after Squirrel Mob is on the table)