Retribution

Enchantment cantrip

Casting Time: 1 action

Range: 60 feet

Components: V

Duration: Instantaneous

You cast a retributive charm on a creature within range. The spell has no immediate effect, but if the creature causes damage to another creature before the end of its next turn it must make a Wisdom saving throw or take 2d8 psychic damage.

This cantrips damage increases by 1d8 when you reach 5th level (3d8), 11th level (4d8) and 17th level (5d8)