Hearthpwn

About Decks: as you see and you have probably firstly tried out the most rated deck for this boss on Hearthpwn and couldnt collect the victory using it, I have made some Crucial Changes here that will lead you to victory mostly above 90%.the thing is the high rated deck on the site doesnt have a strong backbone to ensure victory as you proceed but these modifications has made it more promising to defeat the boss and also a little more expensive

MVP of the deck:  as you know Acidic Swamp Ooze is a very important card and MUST be played and mulliganed for in turn 2 to make sure you can survive the long fight.

but alongside surviving you need to deal the needed damage to the boss using your DAMAGING Spells in order to win! for that to have max-value I'm introducing Bloodmage Thalnos to this deck.OK now if you don't have it don't close the tab! it's all okay just replace it with a Kobold Geomancer actually the card draw isn't needed is we want to use it in a combo and we need the card to be alive and preferably in a cleared board .and if you don't have Pyroblast replace it with [card]firelands portal[/cards] it's not the same but it covers some of the damage we need. So be sure to clear The latest adventure ,Karazhan to acquire the useful cards i included

Combo to win : After gaining board advantage with some only Minion-to-minion trades and not wasting spells to clear the board!, get bloodmage or kobold on the field and burst the zombie dog with Frostbolt + Ice Lance + Ice Lance + Fireball,Forgotten Torch or whatever you have left of your spells

Just DO IT already! kill the damn boss!