The Grail War. Seven Masters chosen to command seven Servants; epic figures from history and myth. A battle royale to the death, the winner granted their heart's desire. But who shall claim victory, and what shall happen when the Grail manifests in the realm of Equestria? Now Trixie, Ditzy Doo, Rainbow Dash, Twilight Sparkle, Shining Armor, Zecora, and Duke Greengrass all find themselves caught up in a fight unlike any that's occurred in Equestria before.
A crossover of the Fate series by Type Moon story set in RainbowDoubleDash's Lunaverse. Pure silliness on my part, because I dig the Fate animes and the Lunaverse is fun to play with, even in non-canon fashion.