Not all of Equestria's once vanquished enemies are so easily defeated, nor were they all set on a single goal of domination or theft. Very few were both willing and capable of simply destruction.
One oddly named unicorn long since banished in the age of darkness returns. Quickly proving to be far more than just a hoof full, he spreads his influence like a plague throughout Equestria. But beware he may just prove to be as deadly as he is annoying.
[Sorry, cancelled due to lack of interest and canon events. I might remake it though.]