Call the Concealing Horde

You call a swarm of tiny beasts (bats, birds, or insects) which flock or flutter around you. They do not leave a 5-foot radius of your location, but follow and continue to surround you. The swarm attacks any hostile creatures within the space when they enter the area, or at the end of your turn. While the swarm surrounds you, you have three-quarters cover, granting you a +5 bonus to AC and Dexterity saving throws.
If you make an attack or cast a spell that affects an enemy creature, the spell ends and the swarm disperses.

Created by Building Paper Mountains
Art by Chris Cold, on ArtStation.