This artwork was created by Nurikabe , the same artist behind Tyranitar sv2 222's artwork from Scarlet/Violet: Paldea Evolved
Like most Pokmon cards, the value of Gyarados 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)
Starting with the next set, Fabled , there will also be two new rarity types, including only two Iconic cards in each set that are even more rare than Enchanted
On paper, the deck looks very strong and solid once it keeps going
With that being said, by far the best green Dragon MTG has ever printed is Old Gnawbone
Also, although its a popular in some Reasoning Gate decks to only side Cyber Jar and Morphing Jar , only summon monsters game one thereby encouraging the opponent to side out Nobleman of Crossout helping to ensure a successful Cyber Jar and/or Morphing Jar resolution post-siding, this is much less viable in DFT