Homebrew

Fermata's Guardian Bees

2-level Conjuration

You conjure 6 swarms of bees for protection. These bees treat you like a hive in danger and surround in a cloud formation.   This gives you three-quarters cover from ranged attacks but the cover lessens as the bees die off. Characters within five feet of you have disadvantage to attack you and on concentration checks. If anyone within 15ft. attacks you, whether or not they are successful, they must make a Dexterity saving throw equal to your spell save DC, if they fail they take 3d4 piercing damage and half as much on a save.   The bees begin to to die off as they attack people. For every attack 3 swarms of bees die off. This will change the amount of cover they provide over time.   12 swarms of bees or greater = total cover 9-6 swarms of bees = three-quarter cover 3 swarms of bees or fewer = half cover
At higher levels: For each level higher that you cast this spell you get an additional 3 swarms of bees.