Shapechanger. The celestial scout can use its action to polymorph into a beast form that resembles a cat (speed 40 ft., climb 30 ft.), an owl (5 ft., fly 60 ft.), or a frog (20 ft., swim 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.
Celestial Sight. Magical darkness doesn't impede the celestial scout's darkvision.
Magic Resistance. The celestial scout has advantage on saving throws against spells and other magical effects.
Sting (Bite in Beast Form). Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d4 + 3) piercing damage, and the target must make on a DC 11 Constitution saving throw, or become poisoned for 1 hour. If the saving throw fails by 5 or more, the target falls unconscious for the same duration, or until it takes damage or another creature uses an action to shake it awake.
Invisibility. The celestial scout magically turns invisible until it attacks or until its concentration ends (as if concentrating on a spell). Any equipment the celestial scout wears or carries is invisible with it.
Description
Celestial Scouts are found throughout the upper planes, usually ferrying messages between heavenly hosts, scouting infernal or demonic threats, or acting as guardian angels for mortals; saving innocent people and children from minor mishaps and injury without their knowing. Sometimes, celestial scouts will help benevolent spell casters by serving as their familiar. Their personalities range from light and playful to self-righteous and haughty.
A celestial scout can assume animal form at will, but in its natural state it resembles a diminutive blue, golden, or alabaster-skinned humanoid with cerulean blue, silver or gold eyes, bird-taloned feet, small white or gold stag horns, and white or silver feathered wings. It strikes while invisible, attacking by shooting poison-tipped feathery quills from the tips of its wings.