Bored one evening, Discord suggests to Celestia that they spice things up by seeing who's best at doing the other's job: he'll handle keeping things harmonious, and she'll be there to throw a big ol' spoonful of chaos into the mix whenever she feels like it. To his surprise, she agrees to do it. He's certain he's got this one in the bag—after all, how hard can something as boring as harmony be?

He shouldn't have underestimated his opponent.

UPDATE: Featured 2-15-14!
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For the Writer's Training Ground #007 down at Equestria Daily. Originally posted on my DA account, due to timing issues.
Cover Art and MLP:FiM in general © Hasbro/Lauren Faust