Electrifying Orbs

You create three orbs of lightning in your space that hover around you for the spell's duration. When you cast the spell — and as a bonus action on each of your turns thereafter — you can expend one of the orbs, causing an arc of lightning to lash at a creature you choose within 60 feet of you. Make a ranged spell attack against the target. On a hit, the target takes 2d8 lightning damage.
Alternatively, when a creature hits you with a melee attack, you can use your reaction to expend one of the orbs to automatically deal the orb's damage to the attacker.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you create one additional orb for each slot level above 2nd.