Lightning Recoil

5th-level evocation

Classes: Druid, sorcerer, warden, wizard
Casting Time: 1 action
Range: Self
Components: V, S
Duration: Concentration, up to 1 minute

A cloud forms above you, striking you with harmless lightning that builds up a charge within your body. Each creature who starts its turn within 5 feet of you, or moves to within 5 feet of you for the first time on its turn, must make a Constitution saving throw. On a failed save, it takes 5d10 lightning damage and is stunned until the end of its turn. On a successful save, it becomes immune to this effect for 1 minute.