Bastion Misawa's first archetype that came to light was the Water Dragon - Bonding H2O. While this archetype got some new support, it wasn't that great but... I've cooked a lot to reach at this result. The biggest challenge as always is that I have to beat Gravekeepers (Odion) and Nekroz (Vetrix) decks that are pretty annoying, to consider this deck as a good enough deck to upload on Youtube. While at first I loved the idea of playing this deck, it was such a bad decision at all, but I've came too far and after a lot of days testing it and optimizing I feel very nice with the result.
The "Water Dragon" can work good against Pyro/Fire monsters, that's why you can add some "Lava Golems" or the Fire Kaiju card.
"Hydrogeddon" has a very nice effect that can help with power creeping, but it's stats are not that great. That's why I use some "Wall of Disruption" which is an anti-meta card. That way I can bring to the field up to 3 of them in one turn. "Transmodify" can target this card and summon "Duoterion" which can then special summon the "Hydrogeddon" back.
"Oxygeddon" on the other hand is very bad card... but, you HAVE to use it to bring your Boss monster, that's why it still exists at x1 copy.
"Dueterion" is an important card of the deck which can give some extra bodies on field when summoned, while it's actually the searcher of the Spell/Trap - Bonding H20 cards. This card is not easy to normal summon without stun and it's not that worthy at all too, so I've added some "Battle Faders" to help with such situations.
The biggest problem of the deck is that the boss monster is not that strong but still, it needs so many resources. One even bigger problem is that "Water Dragon Cluster" is not searchable via generic cards. So, let's learn some things about this card.
1. When you summon "Water Dragon Cluster" don't forget to activate it's first effect to change all other monsters ATK to zero and negate their effects.
2. Never discard "Water Dragon" cards to grave, so you can summon them with the effect of "Water Dragon Cluster".
3. "Water Dragon Cluster" is not easy to search and get to hand, that's why the first time you use it, you have to do it the difficult way (by using "Bonding - D2O"). Then you can use the easy way which is "Bonding - DHO". On the other hand if you are lucky enough to get "Water Dragon Cluster" to hand early, then summon it with "Bonding - DHO".
4. While summoning 2 "Water Dragons" always keep in mind that you are not going to use them again, so feel free to xyz summon to "Galaxy-Eyes Cipher Dragon" for some extra plays.
Of course we need some extenders/searchers to make this deck playable "Souleating Oviraptor" and "Fossil Dig" can do the job. "Souleating Oviraptor" can even search for "Dinowrestler Pankratops" which is a so strong card that is even limited in most formats. Cards as "Back to the front" and "Monster Reborn" can give us the opportunity to use "Dinowrestler Pankratops" effect for more than 1 time per duel.
As I said earlier this deck is not that strong but the way it's built you can abuse the Extra Deck options to be more competitive. There is not enough room for other cards and while I've tried to insert more copies of Bonding - cards they were so bricky.