An alternate side story (there will be several) that features Twilight Sparkle (before her rise to alicorn-dom) where she is asked to reform an injured and literally powerless Sombra, who was found by the three Princesses.
Twilight has difficulty in dealing with his rather mousy and demure personality, a sudden switch from the aggressive and violent tyrant that 'King' Sombra portrayed himself to be. Looks like that maybe this Sombra might be more of a softy than she realized... she might have to tread carefully because making him cry might just be too easy!