lightning tales: Ho-Ho-Horror in ponyville Christmas!

lightning wintermane, a pretty disturbed pony,goes on a murder spree at Christmas, bent on ruining it except for himself, the mane six and his two brothers, thunder cloud and darksky. if you have a like for gore, read on.
this is pure, outright violence compressed into one chapter
i don't own any known characters
Oh, and for this to make sense in part, read Lightning's story, explaining how he became…. well, lightning.