Summon the swimming god

Ritual 12 rounds. Self. Must be standing in the ocean at Feylorn Isle. Duration one trip to The Void Citadel through The Hole in the world. This ritual is incredibly taxing. You take 1D3 life damage each round and are compelled to complete the ritual even if it kills you. For each round you cast the spell you must also make a CON check or gain a Fatigue level. In learning this spell you become obsessed with casting it and exploring the Swimming god. It is rumoured that this spell is only contained in a powerful sentient spellbook called the Infinex that was torn in half through the middle of the spell to prevent it from coming into the world.