Times Ravage

You force a creature to endure the ravages of time. They must make a Wisdom saving throw. On a failure, the target is subject to effect of the spell. Roll 1d6. The target then ages until they are that many years from their natural death. They Take 7d10 Necrotic damage from the shock to their body and deal half damage on their attack. If you concentrate on this spell for the full duration, the change becomes permanent. Otherwise, the creature reverts to their orginal age when you stop concentrating on the spell.