Last month I hit legend from rank 3 with only 2 losses with this deck .It's a really underrated option for the format.
Here are the stats for this month (rank 11 => legend):
As you can see it's a real aggro shaman crusher. So If you face many aggro shaman then go with this with ease instead of CW, because it doesn't auto lose against other match ups. Still don't understand how it does so well against Jade Druid. Only Advice that I can give (also against Jade Shaman): wait for the Golem that comes AFTER Aya for playing Deathwing. If you can maintain tempo every turn, than this play gives you a mostly guaranteed win.
Blood to Ichor gives a better option against 4 health minions like Totem Golem in early game without giving up field presence.