I took Noah's advice and cut two Bedlam in order to add in four Order/Chaos. I also removed the Exiles and one Double Cut to add in three Firemane Avenger and two Boros Charms.
The Firemane Avenger is in because the Frontline Medics were useful and
the Avenger might be able to serve as additional removal or gain me an
extra turn of life. We'll see if it works; the Avenger demands removal
but so do the Sliths if they are allowed to grow. I also tweaked the
mana base just a little to help me see two Mountains by turn two so I
can more reliably cast Slith on turn 2.
The Boros Charm didn't quite do anything last time but the redundancy of
Frontline Medic made it pointless. However, now I can get double
strike, damage or invulnerablility so it has more utility. Of course, it's possible that I just need to get rid of the Firemane Avenger for less conditional removal but this is where I'm going to take the deck next.