Reborn from the Depths

You died. Perhaps you were fighting a terrible storm, perhaps a kraken attack your ship, or perhaps a backstabbing crew member threw you at sea. Yet you are still alive. A powerful entity from below has decided that your time was not now. You gain the following benefits:

• You can breathe both air and water.
• You are immune to the pressure and cold effects of the deep ocean.
• When you are reduced to 0 hit points but not killed outright, you can drop to 1 hit point instead. You can't use this feature until you finish a long rest.
• You have disadvantage on saving throws against being charmed, caused by the entity that saved you.