In a seemingly unprecedented move, IDW Publishing has put together a set of interlocking convention exclusive covers for two different conventions. The Stable of Justice covers by Dan Parent are on My Little Pony: Friendship Is Magic issues #11 and #12.
The first cover, the left side, will only be available at AwesomeCon's Southern Maryland Comicon taking place Saturday November 9th (Info here) in Waldorf, Maryland.
Then Novemeber 23-24, the VA Comicon will have the right side and will have Dan Parent there to sign both copies. (info here)
So if you can be in Maryland tomorrow and Virgina in two weeks… you could end up with a very rare collectible set.