Istishia

Istishia (pronounced is-TISH-ee-ah ), also known as King of Water Elementals, is the neutral god of elemental water and purification.

Relationships
Istishia allies are those deities with a relation to water, like Deep Sashelas, Eldath, Valkur, and Umberlee, but they are not strong relationships. He opposes Kossuth in every way.