An evil version of Princess Celestia who appeared only in a single card in the Enterplay CCG.
We've since seen an actual evil Celestia in the show, Daybreaker, as of S7E10. Please reserve use of this tag for pictures based on the design in the linked card.
View wiki page
[BUY SOME APPLES]
(A more clever ad from the Ponygoons Ad System would be here if you had AdBlock off)