I've had this idea I've been dying to RP for quite a while. Basically, it's long after the death of the Mane 6 (Twi isn't an Alicorn in this universe, and died of old age alongside her friends.) After their deaths, The Elements of Harmony, unable to find new vessels, were scattered across the land. As time passed, technology boomed in Equestria, with military advances such as artillery and the modern rifle, and everyday advances such as the television, refrigerator and toaster. While the Elements were dormant, their magic was slowly leaking into the earth, causing a ancient evil of the Draconequis race (Not discord, much more malevolent.)'s destructive magic to be suppressed. However, your OC through some means (I'll leave it up to you.) Gets their hands on the element of magic, however, it weakens the seal on the evil slumbering, causing his dark magic to slowly seep out of his prison in the deepest depths of Tartarus. As chaos and destruction ensues, the spell cast on him to put him into a seemingly infinite slumber slowly weakens, and the effects of the magic get worse ever day, further accelerating his awakening. Now it's a ticking time bomb to find a way to restore the seal before time's up.
User A: U wanna git rekt m8? User B: i need me fedora first. [Tipping intensifes.] User C: Shrek is love, Shrek is life.