I feel like the deck lack prper win condition. I mean, it has some creatures but they don't seem to have enough evasion. Fearie conclave is really easy to kill, just like the rest of them crits. and all of tchem, literally all of tchem can be killed by
lightning bolt. I would either add a couple of
Gurmag Angler, or something like Ætherling to either make something big that can't be killed by burn spells or that you can save in some way.
Duress seems better than
blackmail for me, at least you are not relying on your oponent as they choose the cards- they can have some sick combo in hand but show you 3 lands and instead of getting rid of his key combo card you will be left with nothing, really.
Apart from that it seems fun
I ove control decks and have a few in paper, one of them really similar to this one so have a like xD