buy yugioh deck Complete Custom for Yu-Gi-Oh! GX its a symphony of power Yugioh Structure Deck Yugi Muto

And then theres Zedruu the Greathearted

(You can only gain the previous effect once per turn.) Once per turn, during the End Phase: You can Set "Sky Striker" Spells with different names from your GY, up to the number of "Sky Striker" Spell Cards you activated this turn while this card was face-up on your field, but banish them when they leave the field

You won't find sets like Prismatic Evolutions, but previous Scarlet and Violet / Sword and Shield sets are in stock right now

In short, you could thin out your deck until it was just Water Energy to power up Rocket Splash with via Powerful Squal

Solgaleo 184 Wishiwashi ex Water 170 School Storm (30+) This attack does 40 more damage for each of your benched Wishiwashi and Wishiwashi ex