Nerubian Egg is amazing in Shaman (unless you're facing an endless pool of druids), you're crazy for not running it. Between FTT and Rockbiter you can take out a Belcher or any other X/5 minion and get a 6/4 back, as well as buff a second minion to 2+ attack (can finish off a Belcher with a regular totem).
Second the Reincarate + Sylvanas comment. Do you want to beat control Paladins and control Warriors? This combo wins you those matches, bar-none. I don't think I've ever lost to a Paladin or Control Warrior as Shaman, when I've drawn that combo and my hexes and silences. The games run to fatigue a lot, and getting 3:1 (or more) out of Sylvanas is just impossible to recover from.
I'm not running the wolves anymore, actually overload 2 is something I try to avoid entirely. Sets me back a whole turn usually. Dr Boom works great with undertaker (if you don't get to play Undertaker early), so do the eggs, and thanos and other cards. Undertaker works pretty well for drawing silences away from the MTT too.
I'd remove S&F and probably put in a Fire Elemental and Bloodlust, but that's just me. I like to have some way to punish my opponent for letting me amass a full set of 0/2 totems and a couple other creatures, which happens more frequently than I really expect, and Bloodlust works as an additional activator for the Eggs if you need to drop your Rockbiter and FTTs earlier. Doom Hammer is better in the mirror, but I find Bloodlust to be undervalued, and even if I only have 2 minions on board, it is still giving +6 attack in a crunch (ideally there'd be 3+ though).