Sciencepone of Science!

To recap:



"That’s a poster someone has in their room of a Nightmare Moon Construct in the form of Doomie disguised as Pinkie dressed as Doomie!"



And the poster is owned by Pinkie Pie who’s being a double-agent, making the Hive believe she’s Doomie being a spy in the form of Pinkie Pie.



Pinkie Pie -disguised as → Doomie, on a spy mission for The Hive disguised as → Pinkie Pie (making Pinkie a double-agent). This is a poster on her wall of → a Nightmare Moon Construct in the form of Doomie → disgused as Pinkie → Dressed as Doomie.



Only Pinkie could pull off being a double-agent for the changelings, though XD