In my initial build, I decided to go with a more aggressive deck in the mold of Theros s Mono-Blue Devotion to see if Heliod is a worthy successor to the original Thassa
What attacks does Palkia ex have
711.2a In every zone other than the battlefield, and also on the battlefield with its front face up, a double-faced card has only the characteristics of its front face
Certainly powerful, a lot more so if somehow it is your only equipment, but not what you want to optimise the deck
It's not a top dog, it's too expensive for an optimized budgetless brew, but it's fine to jam in if you have one handy and budget is a concern
Now you can rerun the credit sequence and play the matchemup mini-game whenever you wish (as long as Dorthy or Sadie is at the card counter)