andfeelalright-blog asked: Is there a reason that Speed vs. Cunning wasn't called Mardu vs. Jeskai? It seems odd that a set that is obviously supposed to be two clans clashing isn't explicitly stated as such. Did WotC just not want to have to spoil a Jeskai card along with Zurgo at the reveal?

The Duel Decks are not Mardu vs. Jeskai either in flavor or in color combinations.