WUBRG decks are always a little tricky to judge if they're not blatantly powerful right out of the box, and because the theming of this deck is so cool, it feels disruptive to try and make upgrades to it, so it's almost a case of being a precon that you shouldn't upgrade, but yet it desperately needs it
Like most Pokmon cards, the value of Gyarados-EX depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (XY Black Star Promos)
It isnt the star of the show, but allows the deck to have a stable Area Zero Underdepths [Stellar Crown] activator, and that means you can have a handful of support Pokmon on your bench to make this deck better than ever
Charizard Cards Worth Between $600 and $800 6
It is more complex, more powerful and aimed at players who already know what they are doing