The Trident of Amakoi (あまこいの鉾) is the main weapon of Suijin. The trident is an overwhelmingly powerful weapon with many powers and is a great weapon for a water god. It is so powerful by hitting Tessaiga once it was able to revert it to its sealed form and easily deflected Sango's Hiraikotsu. It could easily cut through flesh and wood. It cannot be used by demons and humans, since it's a holy weapon and only spiritual beings such as Suijin and fake Suijin can use it.