Aerodactyl's Primal Wingbeat gives the card a 50% chance to shuffle an opponent's Active Pokmon back into their deck
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The 60-card minimum means that youll need to build out a couple of different strategies in your deck, and if you have more in your deck (if there are 204 cards in Chapter 1, you could have up to 816 in your deck, after all) then youll need to strategise even more
The main Item cards for Gardevoir EX are Fog Crystals for additional Energy cards, but Mysterious Tail can help get you a much-needed Rare Candy, Battle VIP Pass or even just a standard Ultra Ball, all of which are immensely useful in your composition
Theyre not only potent, but easy to slot into a multitude of decks - because rather than serving a specific playstyle, they benefit basically all of them
But I would move Serperior into play if you are late in the game and you get a grass Pokemon on your bench that you really want to use right away, you could then use Serperior's Leaf Tornado and get the necessary energy cards on that Pokemon you just put on your bench and retreat Serperior the next turn for only one energy and put that Pokemon into play with the necessary energy cards on it