Innate Spellcasting. The hag's innate spellcasting ability is Charisma (spell save DC 12). She can innately cast the following spells, requiring no spell slots:
Magic Resistance. The hagraven has advantage on saving throws against spells and other magical effects.
Multiattack (raven form only). While in her raven form the hagraven can attack twice with her claws. Claws. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) slashing damage. Change Shape. The hagraven magically polymorphs her arms and claws into ravens wings, or back into her true form. Her statistics are the same in each form, she cannot use spells while in this form, any spell she is already concentrating on remains unaffected however. While in this form she gains a flying speed equal to her movement speed and, while flying, can attack twice with the claws on her feet. Invisible Passage. The hagraven magically turns invisible until she attacks or casts a spell, or until her concentration ends (as if concentrating on a spell). While invisible, she leaves no physical evidence of her passage, so she can be tracked only by magic. Any equipment she wears or carries is invisible with her.