You could drop this first turn and then punch away with 2 or so free Dragons that turn
A player could use Ultra Balls to search out multiple Shaymin EX, dropping them sequentially to burn through dozens of cards in a single opening turn
If were gonna make a 3/3 for four with no defensive ability and no enters-the-battlefield ability work, were gonna need a pretty big payoff
After spotting a Neo-Cosmos Holo Abra on Reddit, I went back to check on my own Abra and Kadabra from the Alakazam ex Collection, as I distinctly (and correctly) recalled them featuring the Retro-Cosmos Holofoil
Its got an even higher ceiling in Commander, where its not too challenging to find the time to gain enough energy for this to start bringing back huge monsters
You can always track and give these codes to your friends, too, if you want