I had a lot of trouble with the Dark Iron Arena because I couldn’t think of a good way to tackle this boss. His ability is to summon a (free) 1/1 taunt, but he also starts with 3 extra mana and has a deck that consists only of legendary minions. Basically you have to contend with at least 2 new minions per round (one taunt and one legendary).
My first attempt was with a secret Hunter but I quickly switched away from that. My next try was an Animated Armor Freeze Mage, which had moderate success. I basically had to draw/play Animated Armor on turn 4 and then slowly chip away. I could never do enough damage to win though. Finally I switched over to Rogue (I guess Oil Rogue) because I could reliably remove the taunt with my weapon. Here’s my deck:
- Cold Blood x 2
- Deadly Poison x 2
- Buccaneer x 2
- Pit Snake x 2
- Betrayal x 2
- Blade Flurry x 2
- Eviscerate x 2
- Sap x 2
- Beneath the Grounds
- Fan of Knives x 2
- Emperor Cobra x 2
- Tinker’s Sharpsword Oil x 2
- Assassinate x 2
- Antique Healbot x 2
- Vanish x 2
- Sprint
It still took many tries (under 15) but I was lucky on my winning game. The AI played Millhouse Manastorm and I was able to play a bunch of cards (Sprint, Beneath the Grounds) and buff my Buccaneer. Then I was lucky that the AI drew 2 Nerubians in a row to give me a strong board presence. I was able to remove board presence with Pit Snake/Emperor Cobra, and had their Tinkmaster Overspark heal my last remaining Nerubian into a 5/5 (which was then buffed by Tinker’s Oil). Alexstrasza healed me for a couple of HP and I was able to achieve lethal with my Oil’d weapon + 2 Deadly Poisons and a Vanish.