Sea Hag

The harpy can breathe air and water.

While within 30 feet of at least two hag allies, the sea hag can cast one of the following spells, requiring no Material components, using the spell's normal casting time, and using Intelligence as the spellcasting ability (spell save DC 11): augury, find familiar, identify, locate object, scrying, or unseen servant. The sea hag must finish a Long Rest before using this trait to cast that spell again.

When a creature that can see the sea hag's true form starts its turn within 30 feet of the sea hag, the sea hag can force the creature to make a DC 11 Wisdom saving throw. On a failure, the creature is frightened until the start of its next turn. On a success, the creature is immune to this effect for 24 hours.