Constantly looting twice a turn cycle will absolutely improve the quality of your hand and help dig to other win conditions, even if you arent playing him with second-draw synergy cards like Jolrael, Mwonvuli Recluse (hint: you should)
The Mew ex card itself originated in the 151 expansion before this shiny print
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)
Removing the threat does
Unified Beatdown is Terapagos ex most consistent attack, as it only takes two colorless energy to attack, making it perfect for players who only want to play four Double Turbo Energy and no other energy in their deck
I certainly have been having tons of success with blue, but the format is quite well balanced, so every color has multiple good decks you can get into