I like dark confidant.
I like bloodghast and bitterblossom with skullclamp, great card advantage given time.
I like reaper of the wilds, it should crush aggro decks if accelerated into it.
I like all of those draws. These and crucible means lots of cards to play each turn.
I don't like very much 12+4 duress effects. Too much!
I don't like the absence of abrupt decay in a BG deck.
I don't like how mud and oath pairings. Bug feels bad. And tinker alone.
The lack of bombs and the low hate (other than discard) makes this deck's topdecks worse than most opponents'.
I have no idea if this deck would be competitive or not. But since Mental misstep and topdecks exist, rely on discarding to control opponent feels weak.
I admit there are a ton of holes in this deck. When I threw the list together I did so without sleep and my brain was fried.
The list should have:
-4 Duress
-4 Thouhtseize / Cabal Therapy
+4 Abrupt Decay
+4 Deathrite Shaman
The sideboard should also have 4 Yixlid Jailer and possibly Scavenging Ooze.
I'm not sure what should be played to deal with Tinker.