Affliction

You unleash psionic energy, targeting one creature within 40 feet range. A creature that is hit by the spell  must make an Intelligence saving throw. On a failed save it takes 1d8 psychic damage, and the target has a disadvantage on its next saving throw, on a successful saving throw the target takes half the damage without having a disadvantage on the saving throw.

This spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).