Without getting into the record discussion, I've seen the shadow before, both in Towers Block, Towers Standard, and Movie Block. (In Towers Block, it's pretty bad, actually, because there's no fear of Enquea.) It loses to decks that run 9 big companions, like Knights and some Elves. I remember the model working better with
Tower of Orthanc, so I'll suggest that. And while it's nice to bluff Enquea, it wouldn't hurt to have one either.
The FP will do well against fighting minion decks, and I suspect is even decent against Corsairs. But how do you beat your own shadow? And without condition removal, how do you handle swarm? I don't play on GCCG, but from what I've heard swarm is uncommon.