Disclosure, only played 3 games with this but won them all soundly.
2 games vs mech hunter - we have an early game that can keep up with them and they just run out of hand. Game 2 even had some big mechs after magnetization.
1 game vs some warrior who never got around to whatever they were trying to do. I had an early zap-o-matic that they had no answer for.
Boneguard Lieutenant is sneaky good with how many totems we'll be summoning, as is the Draenei Totemcarver. The Mechanical Yeti and Mossy Horror were other MVPs (would run 2 Mossys but I only have 1). Earthen Might was amazing as was the Totem Golem and Murkspark Eel.
Never ended up drawing or playing the Crackles, or Gormok. (But I was always in position to activate Gormok should I have drawn him).