Dagger of the Water Spirit’s Sphere

「Dagger of the Water Spirit’s Sphere」……The dagger in which a spirit of the water was formerly sealed which caused a cataclysm that drove away and killed many people. Legend-class weapon. It can make a blade of water, can cut a lot, and doesn’t lose sharpness. When using water attributed magic, it considerably reduces the consumption of magic. The Water attributed magic’s effect is greatly increased.