This piece summons forth an ancient creature known as the Wasgo. This is an ancient sea creature that has the ability to take human form. He is well versed in all facets of aquatic magic. As such, he uses water to cast his spells when in human form. This creature was first discovered by the Natives of the Northwestern Pacific region of the United States before the US was even a thing. They have been accessing this beast for its magic ever since.
This piece gives you a spiritual connection to the Wasgo. When using this item you will either need to be in the bathtub or a swimming pool. You could also be in the shower. As long as you are surround by water, the connection will be made. You will allow the water to run over your body and you will call out to the Wasgo in your mind, asking it to cast the spells that you desire.