Heja,
I can see the point why you play
Doom Blade over
Fatal Push and
Mana Leak over Drown to the Loch - because Baral (
Baral, Chief of Compliance) is simply a good Card :-)
In the whole constellation you need to draw cards. It soon might happen, that you run out of cards and therefore you need a plan. I would recommend
Castle Locthwain,
Asylum Visitor or some simply blue-card-advantage-spell.
In my eyes are the best cards to discard which you can use many times like
Raven's Crime. Discard a land an force an opponent to discard again - awesome. To me your deck look like a blue-black 8-Rack deck. Keep going - I am curious to see the final-version.
Just text me if you need some more inputs.