Well, Gandalf Grey died and then returned as Gandalf White, completely different person. Because in the first place he was not a human, as well as other mages. But I do belive that ShA nor M6 and nor even princesses can't reborn, so temporary loss of magic wasn't so big cost after all.
It's scenes like this that make the show feel like it's going in an even more gender-irrelevant direction sometimes -- I only wonder how many actually younger boys have started watching it either due to older siblings/parents being fans or just from seeing things like this. Well, not that *this* one has grabbed many new fans yet since it's been shown a whopping one time, but still.
Anyway, wicked cool piece. I don't care what anyone says, Sombra has a really solid, interesting design, I feel.