After Sarkhan Vol has done his duty in the past, the story now returns to the present of Tarkir. But it seems that changing the past has produced some unexpected results. Mighty Dragons now rule the skies and the five clans that comprise most of Tarkir's populace. Known characters have an altered fate; Zurgo is just a puny orc and Narset has not died at all, but became a planeswalker instead.
Massed Ranks is a white/green intro pack centering around the Dromoka. The rares in this deck are Arashin Sovereign and Secure the Wastes. The alternate art foil in this deck is Arashin Sovereign.
This Dragons of Tarkir Intro Pack is everything you need in one ready-made deck.