Arcane Rebuke

You retaliate with a burst of magical energy. The triggering creature must make a Dexterity saving throw. On a failed save, it takes 1d4 Psychic damage. Alternatively, you can choose a damage type dealt by another spell you know or have prepared.

If the triggering attack was a critical hit, you add your spellcasting ability modifier to the damage on a failed save.

Cantrip Upgrade. The damage increases to 1d6 at character level 5, 1d8 at level 11, and 1d10 at level 17.