In continuation of yesterday’s First Sentence:
The greatest desire of your soul.
But that’s not possible. Even they can’t reverse life and death. They do magic, not wish-fulfillment. No matter what people think to the contrary, magic is always explicable to those who know enough to do so. How have I heard it said? “Any sufficiently advanced technology is indistinguishable from magic.” People who can’t explain it just aren’t “sufficiently advanced.”