Accelerate/Reverse Age

You touch any creature with a minimum Intelligence score of 1, and begin to unnaturally accelerate or reverse the rate at which they age. You determine weather to accelerate or decrease the age of the target prior to casting the spell. Regardless of if the target is a willing creature, they must make a Charisma saving throw. The targets age is modified by a number of years equal to 1d4 x your spell attack modifier.

A creature which exceeds or decreases beyond its natural lifespan dies instantly if it failed the saving throw. On a successful saving throw, an aged creature cannot exceed its natural lifespan, and is aged or reversed half of the number of years (rounded down). Constructs and undead are immune to the effects of this spell.