Hearthpwn

I wish I could play this deck- It seems super fun and I love the depth with which you explain its mechanics and possibilities. Awesome job!

As a avid druid main I really like the idea of Mecha'Thun Druid, but I've got to say the main issue is that in probably half my games as any druid deck running draw, I have one or two draw cards dead in my hand at the end. I don't even run UI in my taunt druid.  

The issue is if, for instance, you end up with UI in your final hand, you absolutely must play it or else you can't use Mecha'Thun. Spending 10 mana to Deal 10 damage to yourself and summon a 5/5 will probably lose you the game at that point.

I think the only really feasible Mecha'Thun class is Warlock.

I really like Faeria's concepts and the friendliness of this post in general, so I wish y'all success. I'm not sure I'd play it much, personally, but I'll certainly point people who I think would be interested to it.

The major issue I'm seeing with the Druid versions of the Mecha'Thun package is actually the fact that they run so much draw in card form. If, for instance, you end up with draw as your last few cards, you basically instantly lose. You have to spend 1-2 turns fatiguing yourself  before you can combo, at which point if you haven't killed yourself by UI into fatigue, you're dead to anything your opponent plays.

This is the advantage of the Warlock list, because it's in the hero power, you have direct control over every card draw. While its absolute highroll potential is a little lower, I think it's vastly more consistent.