Talk:28 Pranks Later/@comment-25270260-20160807204852/@comment-1031724-20160808031218

Sombra's Fiendship is Magic issue said he would die if he was exposed to Crystal Heart energy again. He was a ghost tied to his horn just like your average Supernatural ghost tied to their final remains, and Radiant Hope revived him.

It is true about the curse though. Maybe Sombra is the only unicorn powerful enough to cast curses.