Shell of Easy Breathing

This large salt-encrusted seashell is more than 2 feet across, with images of deep sea creatures carved around its edge.

Fill the Shell 1 (manipulate) · Effect You place the shell on a level surface and sprinkle a few drops of water into its basin. The shell slowly fills with saltwater over the course of 1 minute. The shell's magic then becomes active, indicated by a steady stream of bubbles. Moving the shell disturbs its contents, causing the item to deactivate and the water inside to evaporate; otherwise, it remains activated for an unlimited duration. While the shell is activated, a creature can submerge its head and let water and bubbles fill its nose and mouth (or whatever body part it uses for breathing) as a 3-action activity. For the next hour, the creature can breathe underwater. The creature is then temporarily immune to shells of easy breathing until the next time it makes its daily preparations.