When running with these decks two really killer cards to use are the continuous trap cards, Forgotten Temple of the Deep and Tornado Wall. If your Sea Serpent, Aqua or Fish type monster would be destroyed, you can banish (remove from play) that monster instead until the End Phase with Forgotten Temple of the Deep. Then Tornado Wall protects you from taking any direct damage from your opponent’s monsters. These two work together because Forgotten Temple of the Deep’s name is treated as “Umi” while on the field, and Tornado Wall can only work with Umi.