Book Two of The Kardanomicon.
Many years after the story of the Mane 6 reached its end, a new one started. A story of two brothers, interlocked in battle, both hiring mercenaries of nine different classes.
Let the Grudge Duel begin.
Roughly 20 years after MLP:FiM
I do not own Team Fortress 2 in any way. And if you don't know who MLP:FIM belongs to, what the hell are you even doing here?
It belongs to Studio B, if you must know