Hearthpwn

The problem is that the combo priest deck is really difficult to play and so many people are playing it. 

Quote from EngineeredCh40s >>

You skipped rogue.

 I don't think Rogue has a consistent way to activate Mechathun

I'd rank them like this

1) Druid: This version has the draw and armor gain to make any opponent sweat.  I've even seen this version of the deck beat things like Zoo without even needing spreading plague.  I could see this being a tier 2 deck.

2) Warlock: This version can win even without mechathun, but it simply isn't as fast or consistent at pulling off the combo as Druid.  Still, it feels like a better option against a more aggressive meta. 

3) Priest: This version feels like a worse Druid Mechathun deck.  It doesn't really offer any significant advantages over druid and it's combo pieces aren't useful at all before the combo.  That being said, it still works well enough and has the ability to run cards like Psychic Scream that could really give it an edge in a combo mirror match. 

4) Warrior: I cannot honestly say how this one would work out.  I like the idea, but have yet to try it or see it on ladder.  The armor warrior can put together is nuts and warrior's draw is oftentimes underrated.  I like the concept a lot, but since I don't know much about the deck, I'm placing it here.  

5) Paladin: I also haven't seen this version of the deck, but Paladin doesn't seem to have the best package to make this work.  This deck has the same issues as priest, but with slower draw and less disruptive tools. 

Winrate of a card =/= power level of that card.  Floop is great and in my time of testing, it has been one of the most powerful tools at my disposal.  

I love Thunderhead, but I haven't seen it at all yet.  I wonder how many people are actually playing it.  

I am now scared of topsy turvy priest.

Scared to play it. 

I get that this is a joke poking fun at all the hall of fame threads, but we really do need a basic set overhaul at some point. 

Whizbang.  I don't plan on playing much during this expansion or honestly next expansion either, so having a way to easily play an ok deck whenever I feel like a game of Hearthstone would be nice. 

It was released right after the Rogue legendary spell that draws your entire deck, so there may have been some "Wow this is a cool interaction hype."

I mean, combo priest has been able to kill you a lot faster than turn 7 with fewer combo pieces for ages.  Sure it requires a board, but still.  You also need to keep in mind that just because a combo only costs 7 mana doesn't mean that you will ever play it by turn 7 (which is the only reason mana should count in this meta).  Sudderwock and Malygos are already really strong combo decks and aren't as difficult to put together.  So, all that said, I don't think this is a terribly scary combo even if I do believe that it may very well be an effective one.  

One thing the community did get right this time was the bottom 5. 

Of the top 10, there are 4 that I wouldn't bet on being in the meta at all: Lab Recruiter, Dreampetal Florist, Academic Espionage, and Luna's Pocket Galaxy.  2 cards that may be in the meta, but are interchangeable with other tools: Juicy Psychmelon and Omega Assembly.  And the final 4 cards, while strong, don't feel at all deck defining or essential.  Meanwhile, cards like Soularium and Giggling Inventor (2 of the best cards of the set) aren't even top 20.  The community never fails to amaze me.  

There is an easy solution to beating the snot out of druid.  Use a deck that can punish all of the do nothing turns that Druid has to have to get to their combo.  Heck, day 1 druid is going to be trash tier with all of the mech going around. 

Not bad.  I think you are underrating a lot of the Hunter mech synergies, but that is based on my faith in a slow burn Hunter.  At the very least, I feel like Fireworks Tech and Bomb Toss are 2 star worthy as they have some promise.  I'm also surprised that you don't think Omega Assembly is worth playing.  To me, that feels like an auto include in decks with boom.  Outside of Dyn-o-matic, there aren't a lot of strong mechs that I'd want to put in my deck, but getting 3 for 1 mana feels good especially when they have rush.   Thunderhead to me feels like a set sleeper.  You give it a little nod by saying that it could be underrated, but I think token Shaman is going to be a big time meta player and it is all because of Thunderhead.  Overall, I think you've rated the cards pretty well.  Great work!

This is a very strong effect and it feels fair on a low health body.  The high attack felt flavorful.