Rainbow Dash challenged Discord to a "prank-off." The victor would become the inaugural Equestrian Heavyweight Prankster Champion, and Ponyville would be the de facto ring.

Thanks to a prank-off ruling forbidding even alicorns from stopping prank-offs from being declared and a consequences clause giving them protection (both to Princess Twilight's extreme dismay), Rainbow "Odds-beater" Dash and Discord "The Stone" were set to go all-out for the championship. Even bringing in the ultimate boom-or-bust factor was fair game...

The idea of Discord and Rainbow having a prank war was suggested by the informational dude as a special story I wrote celebrating my 4-year anniversary of writing on Fimfiction or writing period for that matter...