Istishia

In the Dungeons & Dragons role-playing game, Istishia, also known as "The Water Lord" and "King of Water Elementals," is the Neutral god of Elemental Water and purification. Ed Greenwood created Istishia for his home Forgotten Realms game, inspired by the deity Straasha, created by Michael Moorcock for his Elric stories.

Istishia's symbol is a cresting wave and his favourite weapon is a wave (a warhammer for his clerics). His domains are Destruction, Ocean, Storm, Travel and Water. He is worshipped by bards, elemental archons of water, sailors and travelers. His clerics can be of Chaotic Neutral, True Neutral, Neutral Evil, Neutral Good, and Lawful Neutral alignments.

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