Harpy

Medium Monstrosity, Chaotic Evil

AC 11     Initiative +1 (11)
HP 38 (7d8 + 7)
Speed 20 ft., Fly 40 ft.

Ability Scores
STR 12 (+1) Save +1    DEX 13 (+1) Save +1    CON 12 (+1) Save +1
INT 7 (−2) Save −2    WIS 10 (+0) Save +0    CHA 13 (+1) Save +1

Senses Passive Perception 10
Languages Common
CR 1 (XP 200; PB +2)

Actions

Claw. Melee Attack Roll: +3, reach 5 ft. Hit: 6 (2d4 + 1) Slashing damage.

Luring Song. The harpy sings a magical melody, which lasts until the harpy’s Concentration ends on it. Wisdom Saving Throw: DC 11, each Humanoid and Giant in a 300-foot Emanation originating from the harpy when the song starts.
Failure: The target is Charmed until the song ends and repeats the save at the end of each of its turns. While Charmed, the target is also Incapacitated and ignores Luring Song from other harpies. If the target is more than 5 feet from the harpy, it moves toward her on its turn by the most direct route, not avoiding Opportunity Attacks.
Before entering damaging terrain (like lava or a pit), or whenever the target takes damage from a non-harpy source, it repeats the saving throw.
Success: The target is immune to that harpy’s Luring Song for 24 hours.