Everyone knows about a changeling's primary form of magic - their eponymous transformations. However, their other major form of magic is far less well-known, and yet, potentially, more dangerous.

Nevertheless, Twilight Sparkle and Pinkie Pie, protected from its effects but trapped and isolated, must figure out who the source of this cataclysmic cognitive collapse is. Or, at least, who they look like - they know exactly who they really are, and that only makes the situation more dire.

Can they find the imposter without being able to leave the castle basement? Even if they do, can they save the town without falling victim to the same affliction they're trying to dispel? Can even Twilight's genius overcome the force of true stupidity?

And the most baffling question of all, as far as Pinkie's concerned: why on Equestria would Twilight ask for her help on this?!

Written for the Dumb as Doornails Contest, based on a headcanon I've had for a long, long time.

Featured on 26rd September 2024 - Thank you guys so much!