As unupped decks go, this is probably one of the best you can do for bronze arena. I'd probably tweak it a bit just based on personal preference, but it looks fairly solid.
-1 shockwave +1 fog shield. I find shockwave isn't enough to kill certain things that I really want to, such as chargers and certain dragons (death, upped water, unupped time, etc) and fog is a really nice thing to have early, plus an extra in reserve in case it gets destroyed is nice.
-1 graviton fire eater -1 vamp dagger +2 arsenic: This keeps it fully unupped, eases the pressure on darkness quanta in favour of death, which you aren't using, and eases up on fire quanta for my next suggestion:
-2 chaos seed +2 almost anything, such as +1 rage pot or +1 bolt or +1 reverse time (any of those would be good) Chaos seed has its place in some decks, but not this one, when you can get far more reliable CC from other elements. Rage potion could be a good choice, although that will start to strain the fire quanta use unless you follow my 2nd suggestion above. Rage pot also doubles as being able to pump your lycans to 11/1 or a sufficiently phat forest spirit. (and graviton firemaster if you up that, but I'm assuming no ups for this deck)
Mind flayer and purify might work out here, too, but you probably won't need them vs bronze. If you're losing to the types of decks those would help against, keep them in mind, though.