Blood Frenzy. The harpy has advantage on melee attack rolls against any creature that doesn't have all its hit points.
Dark Devotion. The harpy has advantage on saving throws against being charmed or frightened.
Multiattack. The harpy makes two melee attacks: one with its bite and one with its claws.
Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit:3 (1d4 + 1) piercing damage.
Claws. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit:3 (1d4 + 1) slashing damage.
Murderous gangs of harpies collect in grim places across Theros, preying on any who pass by. Many merchants face regular losses at the harpies' claws, common casualties often referred to as a "blood toll."