Ancient Blood Raven

Mimicry. The raven can mimic simple sounds it has heard, such as a person whispering, a baby crying, or an animal chittering. A creature that hears the sounds can tell they are imitations with a successful DC 10 Wisdom (Insight) check.

Keen Sight. The Raven has advantage on Wisdom (Perception) checks that rely on sight.

Beak. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (2d6) 

Talons. Melee Weapon Attack: +13 to hit, reach 5 ft., 1 target. Hit: 6 (2d6) [slashing] damage.

Teleport (Recharge 2-3 per long rest). The Raven magically teleports, along with it's owner, up to 50 feet to an unoccupied space it can see.

Evaporate. The Blood Raven explodes spewing its blood form everyone in it's range must make an Dexterity saving throw, if failed take 3d8 necrotic damage and halved if succeeded

Reincorporate. After evaporating the Blood Raven must use its next turns action to Reincorporate.