Touch of Rot

You touch a creature or an object and imbue them with rot. Make a melee spell attack against a target. If the target's feet of movement are at 0, the attack succeeded automatically. If the target still has movement, they need to make a constitution saving throw. The target suffers 10d6 + 10 necrotic damage and they get 1d100 years older. After the increase in their age, if the creature's new age is abnormal for their race, they die. If the target was an object or a construct, they crumble to dust.