Feedback Please - Shaman Deck

Hey everyone. I have been playing off and on since beta and I am having trouble breaking out of rank 18 - 16. I have created a Shaman deck that seems to be having some relative success. I was hoping that you fine gentlemen and ladies could take a look at what I have and perhaps make some suggestions on how I can improve on my deck. Thank you in advance for any help!

Lightning Bolt x2
Rockbiter Weapon x2
Cogmaster x2
Crackle x2
Annoy-O-Tron x1
Flametoung Totem x2
Micro Machine x2
Whirling Zap-o-matic x2
Powermace x2
Hex x2
Lightning Storm X2
Harvest Golem x2
Manatide Totem x1
Bloodlust x2
Antique Healbot x2
Fire Elemental x2

Basically I try to play control until my board is large enough to OTK with Bloodlust - With a little wombo combo via powermace + Micro Machine or Whirling Zap-o-matic

I feel the combo doesn’t do as well as I’d hope (They keep nuking my creature after buff)

I try to make totems as often as possible and hope that they ignore them

Anyway I hope some of you have some observations, comments and/or suggestions!
Thanks Again!