R: touch; T: creature or object; D: 0
Necrotic rot infuses a target you touch. A living creature takes [dice] Flesh damage. An undead creature heals [sum]+[dice] Grit or [dice] Flesh.
An object ages [sum] months. If [sum] > 12, it ages [sum] years instead. Ropes fray, wood rots, iron rusts, stone is probably fine.