MLP-MTG: Trixie's Mirror

An interesting card. Wasn't aware of soul foundry, but then again, I'm not too familiar with the less famous casual cards. An interesting route you could take this is by sort of making it like a creature version of isochron scepter, with a very cheap casting cost and exiling it at EOT.(2 maybe. Typically, this is the type of card that you would have to test to find out the sweet spot where it isn't under or overcosted, however, I understand if you don't have the time or the drive to do this) There is absolutely nothing in your set that profitably interacts with this card, (Owlowhatever and Dr Whooves are so UP that I'm not including them) so that's something to keep in mind. From actual cards, Man-O'-War/Aether Adept and Gilded Drake seem to be the best targets I can think of, which are all pretty nutty with the Mirror. Not sure if that makes it too good, so try to use your best judgement when trying to balance it.