These clever harpies have coal black hair and feathers, an intense curiosity, and a knack for nicking things. They often steal books, maps, and other written materials as well as shiny baubles. Much like their namesake, crow harpies are known to hold grudges for a long time.
Crow's cunning. Advantage on intelligence checks and +2 to deception checks
Feathered filtchers. Crow harpies love shiny things even more-so than other types of harpies and are fairly adept at sneaking. +4 sleight of hand when stealing, -1 concentration on all other things. +2 stealth.
Easily Improvised. They can use their feathers and claws as thieves' tools for for locks up to CR 10.
Multiattack. The harpy makes two attacks: one with its claws and one with its club.
Claws. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 6 (2d4 + 1) slashing damage.
Club. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d4 + 1) bludgeoning damage.
Vicious Mockery. The harpy unleash a string of insults laced with subtle enchantments at a creature the harpy can see within range. If the target can hear the harpy (though it need not understand the harpy), it must succeed on a Wisdom saving throw or take 1d4 psychic damage and have disadvantage on the next Attack roll it makes before the end of its next turn.
This spell's damage increases by 1d4 when the harpy reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).
A harpy combines the body, legs, and wings of a crow with the torso, arms, and head of a human female. Its sweet song has lured countless adventurers to their deaths.