Talk:Twilight's Kingdom - Part 1/@comment-4254447-20140421062107/@comment-7345250-20140421214134

Probably 2.5 - 3.5


 * Discord


 * King Sombra


 * (Possible third threat - the reason for their acquisition of the Elements in the first place)


 * Nightmare Moon (Celestia only)

It is quite possible they were used even more than this though.