The changelings blessed with it can spend one point of Glamour to allow the changeling to breathe underwater and swim at a terrific rate (equal to twice the character’s Speed rating) for the rest of the scene. The catch is that the changeling cannot leave the water or breathe air until the power wears off or until he spends another Glamour point to cancel the blessing. The changeling has to hold his breath if he sticks his head out of the water (see the World of Darkness Rulebook). If the changeling is made to leave the water completely before the scene is over, he begins to drown, automatically taking one point of lethal damage each turn until he is either returned to the water or he dies.
- Changeling: The Lost (Rulebook), p. 110