        Luna nodded.  “’Tis not all, we are sad to say.  Years had passed since unification, and Celestia’s strength had grown.  Our sister could carefully change the course of the sun, while still having energy remaining to perform other tasks.  Thus, Clopurnicus convinced her to try and control the star again.  She had—in the brief war with the griffons—managed to control a solar flare.  It did not directly hurt them, but it did somehow affect their sense of flight, and they became disorganized.  Some of the pegasi had a similar complaint, but they had grown accustomed to wearing metal armor—which apparently also confused their sense of flight—and they were easily able to defeat a contingent of griffons.