Arcane Riposte

1st-level (evocation; arcane, attack)
Class(es): Bard, sorcerer, warlock, wizard
Casting Time: 1 Reaction, which you take when a creature makes a melee attack against you
Range: Self
Components: V, S
Duration: Instantaneous

You respond to an incoming attack with a magically-infused attack of your own. Make a melee spell attack against the creature that attacked you. If you hit, the creature takes 3d6 acid, cold, fire, lightning, poison, or thunder damage.

Cast at Higher Levels. The spell deals an extra 1d6 damage for each slot level above 1st.