Donphan is a roller coaster when it comes to it's viability. It started off as a cute little rouge deck then it catapulted into legitimate contender in the format. It eventually became the deck to beat in one of the weirdest format's this game has had. Then it has slowly fallen down to a good deck but constantly being surpassed by decks that can out do this deck.This deck is a good deck which is my favorite surprise of the format.
The deck is based on walling, but it needs to be a wall worth putting out. Why I am bringing this up is that I think Wailord EX has no place any where near a Donphan deck. Wailord theoretically makes okay sense. It is a 250 wall that is a basic, but what this deck needs is a way to get donphan back in active so you can keep the damage coming. The problem with that is that he has a 4 energy retreat cost, and that is half the energy of this deck. Of course you could use float stones(which could be megaphoned away), or switches but you are wasting resources on a two prize stall card. If you want to stall use cards like Suicune or Sigilyph who can mantain their spot longer, and only cost 1 prize.
The deck is based on walling, but it needs to be a wall worth putting out. Why I am bringing this up is that I think Wailord EX has no place any where near a Donphan deck. Wailord theoretically makes okay sense. It is a 250 wall that is a basic, but what this deck needs is a way to get donphan back in active so you can keep the damage coming. The problem with that is that he has a 4 energy retreat cost, and that is half the energy of this deck. Of course you could use float stones(which could be megaphoned away), or switches but you are wasting resources on a two prize stall card. If you want to stall use cards like Suicune or Sigilyph who can mantain their spot longer, and only cost 1 prize.