By maorows (Via derpibooru)
King Sombra, helping the infected one flight of stairs at a time.
First the stair maze, now a stair monster? Sombra definitly approves!
Because the best part of owning a bunch of absurdly long staircases is THE JOY OF THROWING YOUR ENEMIES DOWN THEM.
He so loved stairs, he enslaved an entire empire to build then all day and night.