Aspect of Dagon

This spell grants the caster the ability to breath underwater for 10 minutes and swimming speed equal to the caster's regular movement speed. The caster takes on a fish-like or amphibian appearance. Skin turns mottled green, gills appear on the neck, facial features flatten, and hands and feet become webbed. The caster's hands also grow long claws, which deal 1d6 slashing damage on a successful melee attack and ignore underwater combat penalties.

A 4th-level warlock may choose Aspect of Dagon as an Eldritch Invocation. Its duration then increases to 1 hour. The natural weapons also become magic and gain a +1 bonus to attacks.