Cherub

Shapechanger. The cherub can use its action to polymorph into a beast form that resembles a humanoid baby (speed 10 ft.), a dove (20 ft., fly 60 ft.), or a puppy (20 ft.), or back into its true form. Its statistics are the same in each form, except for the speed changes noted. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.

Magic Resistance. The cherub has advantage on saving throws against spells and other magical effects.

Angelic weapon. The cherub's weapon attacks are magical. When the cherub hits with any weapon, the weapon deals an extra 2 (1d4) radiant damage (included in the attack).

Shortbow. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 3) piercing damage plus 2 (1d4) radiant damage.

Invisibility. The cherub magically turns invisible until it attacks or until its concentration ends (as if concentrating on a spell). Any equipment the cherub wears or carries is invisible with it.

Cupid's arrow (1/day). The cherub enchants two small matching objects. The first creatures other than the cherub who touch these objects absorb them. They can't feel them or take damage from them. Instead, they become charmed by each other. The DC is their wisdom against the cherub's charisma.