"Hey there, you look like a sturdy fellow! Interested in a treasure map? Only a few gold coins and this map to an ancient ruins secret room can be yours!"
A Basic Dungeon Crawl that starts with a map.
What if a mage passes his powers on to his firstborn son, and a female mage to her first daughter, leaving the parent POWERLESS? A plain mortal, a sorcerer no longer, all wizardly might gone?
Or: what if a female wizard recieves the power of a mage who sires a child with her? Could lead to promiscuous witches and overly careful mages.