Samloyal23
Adventurer
I am working on a spell that will only have a 1 day duration, during which you age at 10% the normal rate. This means you have to recast it every day. It will require an expensive material component. This conjures to mind the image of a king who bleeds his coffers dry trying to extend his life via his court wizard, who now holds a dangerously influential source of power over said king.
It's a spell...and a plot hook! Anyone who wants to use it needs to continuously find vast sources of wealth.
This could be a series of progressively more powerful but more expensive spells. The components could also require increasingly evil deeds to obtain, tempting a hero into corruption.