Eternal Snake

There is a great wealth of cards to support this deck in Extended, but thats the problem for me, I can't decide a build. The current one below is more like a list of suggestions than a competitive deck. It needs more drawing, better win condition(s), and mana acceleration. I just don't know what to cut to add to each of these aspects. I'm loathe to take out the snakes or the vials - an uncounterable counter that they may not expect game one is one of the reasons I'm putting this together. A recycling curfew to bounce your witness and one of their creatures is also good. I haven't playtested it yet. Any suggestions welcome.