War of the Spark. The storyline and set will revolve around the fight between the Gatewatch and Nicol Bolas. The fight turns into an all-out planeswalker war. Dozens of powerful planeswalkers, from many disparate realities, unite against the elder dragon, who has claimed dominion over Ravnica and is perilously close to completing the spell that will grant him godhood. As they fight alongside the Gatewatchled by Chandra Nalaar, Jace Beleren, and Gideon Juraagainst Bolas and his relentless army of Eternals, nothing less than the fate of the multiverse is at stake. Little do the Gatewatch suspect that Bolas has not only accounted for their interference, but he is practically relying on it.
Each theme booster contains 35 cards, all of a single color and includes 1 rare or mythic rare.