They use cards that discard the opponent's Energy, limit their hand size, or shut off their Pokmon's Abilities
However, milling is an additional win-condition that can be achieved by reducing your opponent's library to zero, making them unable to draw a card on their upkeep and thus losing the game
The quirky yet charming nature of Stunfisk, combined with its strategic battle potential, has allowed it to maintain a steady fanbase over the years
Then all your Blitzclique monsters that were already on the field to see the card get destroyed can pick up the pieces and fashion them into loot, by adding more Blitzclique cards to your hand
I wrote a post about how you can sign up.
Emerald and Rubys split ability to deal with opponents cards while working toward unleashing its own powerful characters makes it a deck that requires some practice to fully understand, needing some careful cardplay - and good luck - to overcome its less forgiving aspects