Why use Elements Unite when you can use Labyrinth builder against Weevil. He is 100% unable to break the wall plus you keep the 500 no-damage points. I recommend switching the skill. Once Master of OZ is out (for Piranhas), you don't need wall anymore. In one turn, Emblem of Awakening, use the wall, tribute Cu for Neo Aqua Mador in atk, sacrifice with white elephant gift. Get 700 points. *Airhorn.