"I usually use [Bahamut Shark]" Deck 2020

Playing

It is his WATER Deck mainly of rank 4 that utilizes level 4 fish as a material.
By making full use of the effect of the ace monster "Bahamut Shark", large monsters such as "Toadally Awesome" with a vicious counter effect and Mirai Dragon Emperor Hope will be used to suppress them. Also, depending on the situation, you can deploy attack-type monsters such as spiders and sharks that are suitable for beatdowns instead of those monsters.

Strength

For the fish monsters used in the main deck, we prioritized those with excellent deployment power. Starting with 《Buzzsaw Shark》, an excellent monster that can access 《Bahamut Shark》by itself, most of the Fish monsters in the Deck have abilities suitable for deployment. 《Beautunaful Princess》that can recruit them will also be important. In addition, although it is not Fish, I also used 《Xyz Slidolphin》, which is also his WATER and has an excellent expansion effect. The strength of this deck is being able to make full use of these cards and quickly deploy his Xyz Monster.
"Toadally Awesome", which has a powerful effect, is the monster you should aim for with the highest priority. In addition to that, if there are other WATER Xyz Monsters, "Valiant Shark Lancer", which has the effect of destroying it in the opponent's turn, and Mirai Dragon Emperor Hope, which can negate all monster effects, although it costs a little more, can be lined up. If you can, you will have a stronger board.
"Bahamut Shark", which cannot attack after using its effect, can be ignored by summoning Vespenate repeatedly. However, he can't use monsters other than WATER on the turn he uses Double Fin Shark's effect, so that's something to keep in mind.

Weakness

While you can quickly line up Xyz Monsters, it is not uncommon to consume more than half of the EX Deck in the early stages. As such, he's not very good at endurance fights, and if your opponent doesn't finish the game early with his deck like that, you might end up losing the game. Also, you will naturally have a tough fight against a Deck that has more deployment power than this Deck.
Furthermore, since it is a deck that uses Special Summon a lot, he is not good at sealing Special Summon. In particular, El Shaddoll Winda, which is relatively easy to encounter, can be said to be a natural enemy because there are no monsters that can be dealt with in the main deck.

Customize

Because we focused on developing cards, we didn't include interference cards such as hand triggers. So by introducing those cards, I think you can take a more stable strategy.