Siege of the Crystal Empire

Siege of the Crystal Empire is the thirteenth story arc of IDW Publishing's, spanning issues #34 through #36. In the story, a mysterious antagonist initiates a villainous attack on the Crystal Empire that leads to the restoration of King Sombra. It thus serves as a sequel to both The Crystal Empire - Part 1, The Crystal Empire - Part 2, and King Sombra's My Little Pony: FIENDship is Magic story.