Restores your HP without recieving damage when attacked by <a href="http://pldh.net/dex/type/water"><img src="http://media.pldh.net/types/water.png" alt="water_type" /></a>-type moves. Recovers your HP every turn when the weather is <a href="http://pldh.net/guides/weather/rain" class="linksred">Rain</a>.