Unoptimized, just an idea I had.
The Combo: Because of Far Sight, you can actually pull this off in a number of ways (empty board + 5-mana Mecha'thun + Volcano, for example), but the main idea is to play an 8-mana Mecha'thun + Crushing Hand + Zap!
2/22/19: Took out the Corpse Takers and Lightning Storms for a Volcano, a couple Lightning Bolts, and Krag'wa. Krag is nice for generating extra removal/healing.
Small tip for this deck is basically you should never be Hero powering in the late game. if your opponent realizes what you're doing, they'll just leave up your 0/2 tokens and it will be impossible to win the game.