To be fair, this spirit god cant attack or block until there are eight or more permanents in your graveyard, but thats not going to be hard to do if you build your deck to support it
I looked at running both Merfolk Trickster and Harbinger of Tides as both are decently high power and high tempo dorks
If you are using a binder, make sure the card slots are big enough for your Pokmon cards
Building a reliable Blastoise ex deck is challenging, as it demands a lot of Energy to unleash its full potential
When a Normal, Quick-Play or Ritual Spell Card, or a Normal or Counter Trap Card, is activated, it cannot be returned from the field to the hand or Deck during that Chain unless it has an effect that would cause it to remain on the field after activation, such as "Swords of Revealing Light" or "Kunai with Chain" (unless a card effect specifically permits it, such as "Goblin Out of the Frying Pan")