Write a story about a mysterious figure who appears in a small town and seems to have magical abilities

Write a story about a mysterious figure who appears in a small town and seems to have magical abilities. The townspeople are both intrigued and fearful of this stranger, who offers to help with their problems in exchange for a price. But as they come to realize the true extent of the figure’s powers, they must decide whether to trust in their abilities or to banish them from the town for good.