@Toffee
(Sombra was an umbrum blasted into foal form and apparently forgetting that part of his origins.
he grew up alongside radiant hope in an orphanage, they were friends and wanted to visit the crystal festival.
however, every year at the festival, when the crystal heart is charged, he would be laid low with incredible pain.
as a young adult he finally found out what he really was and why the crystal heart hurt him
Amore had figured it out earlier, but kept it secret, hoping the crystal heart would eventually accept him fully and (i honestly never understood her motivations.)
Sombra did not take it so well, petrifying her into a crystal statue and shattering her.
that’s about when radiant hope returned with the princesses.
they fought and nearly won against him but then he ecided to get a break in.)