Effectivement cela ne marche pas:
2. Entering the battlefield transformed
A few effects can put a card onto the battlefield transformed. This means to put it on the battlefield with its back face up. Starting with this set, we have a new rule that if you're told to put a card that isn't a DFC onto the battlefield transformed, it just stays where it is. This may affect a few cards in this set, but I think the Magic Origins planeswalkers illustrate the change nicely. (This is code for "The cool cards in this set I could use to illustrate this haven't been previewed yet." I know. I feel the same way.) Say you control a Clone that's copying Jace, Vryn's Prodigy, and you activate faux-Jace's ability with four thousand cards in your graveyard. Well, four thousand is "five or more," so faux-Jace dutifully exiles himself. Then he tries to return transformed, but in exile he's just a single-faced Clone. He's not a DFC, so he gets detained at the border and remains in exile.
I hope the card you drew was good, because this wasn't a great play otherwise.
En d'autres termes, il reste simplement exilé! Rmarque çà transforme cette combo en une combo humoristique !
Puisque c'est lui même qui se met en cage !