Time Leech

As you cast the spell on the target a circle of dark energy encases the target. The targeted creature must make a constitution saving throw against your spell DC. On a failed save the target takes 5d10 necrotic damage, the target also loses 1d4+2 years, if the targeted creature is immune to magical aging then the effect doesn't age them but they still take the damage. On a successful save the creature takes half damage and is not magically aged.