Ultimate Adventurer's Handbook
Stolen Life
5-level Abjuration
Casting Time: 1 action
Components: V, S, M
Materials: a calendar or timepiece older than you
Duration: Instantaneous
Make a melee spell attack against a creature within your reach. On a hit, the target takes 8d8 necrotic damage, and if that creature is a humanoid it must succeed on a Constitution saving throw or age 1d4 years. You add the years that creature aged to your maximum natural life span.