Glorantha: The Cult of Magasta

Magasta (Lord of All Sea Gods) teaches that only the sea is eternal. After death, all personality and knowledge is lost and the individual becomes part of the oceans. Each person is like a current in the ever-flowing mass of the sea. Some are large and strong, some weak, but all have a beginning, and all ultimately end. Through death, new life is brought about. The seas themselves continually die, swept through Magasta's Pool to the underworld. But new seas always return from the edge of the world.

Magasta the Churner is the god of the elemental Water. He heads a complex pantheon about which little is known by those who dwell strictly on land. The stories of Creation record that it was Magasta who formed the world's seas.
Temples to Magasta are not common, but almost every seaside town or village wil have at least one shrine to him.

(Glorantha is a fantasy world that was created by Greg Stafford. It is a place of myth and magic, where a multitude of gods carry on an eon-old conflict. Now is the time of the Hero Wars, when old gods return, great battles are fought, and the future of the world will be irrevocably changed, forever.It has been used as the background for several role-playing games, especially RuneQuest and HeroQuest.)