Magic can't in itself be the be all and end all, else there is no story because everything is solved with a wave of the old wand. So what limits have you set on magic in your stories? Can these limits be overcome? How did the limits develop? Do differing magical species have different limits (they do in mine)? What other ways do your characters use to overcome their problems?
When the unexpected really hits the world you've created, how do your characters react to it? Which show hidden courage? Which show blatant cowardice? How does reactions like these change relationships between your characters? And when things settle back to what counts as normal in your story world, are things ever the same again between your characters? (I don't think they should be but are the changes here positive or negative?).