• Your main attacker is Roaring Moon
• With Flutter Mane you can block the ability of your opponent's Active Pokémon, which could be very good in early game
• Scream Tail is in the deck because it has only one retreat cost and so it's better than Koraidon
• Main goal is to get much Ancient cards in your discard pile, with cards like Pokéstop, Explorer's Guidance or Ultra Ball, to boost Roaring Moons attack to knockout anything