Talk:My Little Pony: Nightmare Knights/Gallery/@comment-33646035-20181018023212/@comment-29981995-20181018033345

Well, on the real world side of things, the writers probably wanted ot make use of some characters who haven't gotten as much attention. There's also the fact that Discord has been part of a team like this before. Granted, Trixie was part of the same team, but not having two members shared between the two helps them feel a little more distinct.

Within the story itself, there could also be a number of reasons. Stygian is apparently helping Luna assemble her team, and he has no experience with Discord that we know of. With Luna's powers stolen it could be that they have no way of contacting him. It's also possible that he wouldn't want to try tangling with Eris, or that Luna and Stygian don't want him trying to. Of course, we'll have to wait until at least the next issue to find out; might be interesting to see if they looked at any other candidates before settling on the three who are in fact joining them.