Kinda funny that Sombra and Storm King are the only villains in My Little Pony: Friendship is Magic to actually be killed off. And funny thing is, Sombra died twice. Rarity mentioned that Sombra was dispelled into the Ether, the same exact place that the magic that Cozy Glow stole was gonna be sent too in the Season 8 finale, as Tirek mentioned. Here are the spirits of Sombra and Storm King warning their enemies that they are never truly gone. Mahahahaha! Evil Eyes Devilish Meow Evil  
King Sombra Attack
 
Vector Credits
 
Storm King vector by :iconandoanimalia:
 
King Sombra vector by :iconsketchmcreations:
 
Background found in Google