While it is not the strongest turbo option in the current format, Gholdengo ex is still a phenomenal strategy, and it is the best Metal-type Pokmon in the meta currently
You can use everything in your bin to cast cards like Tasigur, the Golden Fang and Dig Through Time for next to no mana
As long as thats there, regardless of what type of Pokemon you have in your hand, it can be played to your Active Spot immediately
When it comes into play, you get to bounce a creature back to its owners hand, but they cant cast spells with that same name until your next turn
To keep the pain train going we have some topdeck manipulation with cards like Nightveil Sprite and granting Yuriko and friends evasion with Tetsuko Umezawa, Fugitive
Many of this deck's cards are designed to help you refill your hand and reacquire cards when they get banished, which will allow you to play aggressively