He doesn't do enough enough to justify the drawback. Most of the time, he's sort of nice... but I wouldn't risk throwing away the game just to play a minion undercosted by 1-1.5 mana.
The main reason to play him is for fun, because you like the chance of ridiculous plays against you.
I only have Millhouse as a legendary, so I've put it in my deck... he's very situational, but if you manage to pull him in starting hand, he's very helpful in turn 1 or 2. He's also useful if the opponent is topdecking.
Had people ragequit on me because I pulled Millhouse out in the beginning. They also don't like if there's a Master Swordsmith next to it.
I also had a Warrior laughing at my Manahouse, and dealt 10 damage to me on second turn. He was topdecking for the rest of the game though, and didn't laugh after that.
He is very situational, but very fun(ny).
Edited by Aidames on 5/19/2014 3:17 PM PDT
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