The card game Elements of Harmony is the center of Mountain Pass' life. When he learns that Princess Luna herself will be presiding over a tournament in Ponyville, he and his team see their chance to make their club shine. But everything goes wrong.
Upon returning to the human world, Sunset Shimmer finds Canterlot City twisted into the grotesque image of Phyrexia. Joining her six closest friends, Sunset must save what remains of her home.
When the portal to Equestria is destroyed, Sunset Shimmer's planeswalker spark awakens in a moment of despair. Upon arriving in a world where souls are transformed by nightfall, the very foundation of Sunset's identity is broken in two.
Twilight Sparkle discovers that the "spark" that awakened the Element of Magic is more than it seems, and learns the true nature of her own planeswalker abilities. A Magic: the Gathering crossover.