Maybe it's the long-term effects of magic on the human brain. Maybe it's the eccentricity of genius. Whatever the case, Sunset Shimmer needs to defuse a sub-critical Twilight Sparkle, and she needs to do so before scalpels get involved.
An entry in the Crazy Cybernetics Story Contest. Rated Teen for suggestive concepts north of what EqG could get away with. Crosses over on the level of the tabletop game; no actual entities from the Warhammer universe appear in this story and no familiarity with it should be necessary.