[TIP] WATER MONSTER STRATEGY, PART 1 Monsters of the WATER Attribute work exceptionally well together, and if you like savage sea monsters, "Levia-Dragon - Daedalus" is a must have in your Deck. With this giant WATER monster, you can send "Umi" on your side of the field to the Graveyard in order to destroy all other monsters. This gives you a clear attack at the opponent.
Since you need "Umi" to achieve the full power of "Levia-Dragon - Daedalus", you should include other monsters in your Deck that take advantage of "Umi". "Mermaid Knight" is a great addition, she can attack twice while "Umi" is on the field.