shiny hoopa pokemon card Pokémon - V - SWSH176 - Black Star Promo - Trading [Fighting] Hoopa - 083/159

The ability to reset opponents while maintaining your advantage is simply irreplaceable

Check the bottom of your card For the trained eye, there are telltale signs of what makes a Pokmon card valuable

However, you can solve this problem with Voltaic Key since it allows you to untap Time Vault, take an extra turn, repeat it infinitely, and basically win the game since your opponent will have no chance to play

Secret Door It may surprise you, but Secret Door is one of the best mana sinks and win conditions you can have when you get access to infinite blue mana, as you can endlessly go through all dungeons and win with it