Shadow Hag

The Shadow Hag is a boss in.

Strategy
To defeat the Shadow Hag, Link must dodge the four shadows that go around the room. The four shadows will join together after a time and release moths. The Shadow Hag will disappear into shadow every time Link looks at her, so the only way to win this battle is for Link to turn his back to her, then when she charges, to fire a seed at the wall with the Seed Shooter. She is only vulnerable when she is charging, so this is when Link must attack. The best way to do this is to lure her away from the moths she makes just before she charges. If he does not do this, the moths may intercept the fired seed. Eventually, the Shadow Hag will be defeated, leaving behind a Heart Container and allowing Link to retrieve the Echoing Howl.

Trivia

 * The Shadow Hag greatly resembles Joelle, one of the four Poe Sisters in Ocarina of Time and Majora's Mask.