War of the Spark Booster Single Pack contains 15 cards per pack and contains at least one PLANESWALKER IN EVERY PACK. (Rarity varies between uncommon and mythic rare.) RAVNICA is under siege as Nicol Bolas and the planeswalkers of the Gatewatch face off in their epic final battle.
New mechanic AMASS and returning favorite PROLIFERATE both help strengthen your creatures with +1/+1 counters.
War of the Spark is the follow-up to the hit Magic: The Gathering (MTG) expansions GUILDS OF RAVNICA and RAVNICA ALLEGIANCE.