Hearthpwn

I beat Toki first try. I got two of the passives that reduce cost of cards you don't start with, then wild magic and one Mana wyrm. Toss in the mage quest and gg ez no re.

The boss that makes spells echo died to me on the first turn with arcane missiles. Seriously, it was too easy.

I hit legend with taunt druid. I'd say the biggest counter is control warrior. They have the taunt minion that gives you 3 1/1 beasts. 

I just played this deck vs someone else playing a similar summoning stone deck. I took the swap health fate because he started out with a dragon egg, then I took the 'draw card when minion dies' fate when I was low. He had violet teacher, so needless to say. He was milled from full health to death. :)