Are you seriously comparing this card to Balance?
Scion of the Wild wasn't very good and it beat the snot out of this in limited. There is no possible way for this to be broken in a two player game.
Of course I am not seriously comparing it to Balance! I was mocking your statement 'It's only good when you are losing'.
I acknowledge that there is no problem at all with this in a two player game. I think I have already stated that. I also acknowledge that multiplayer can usually handle fat non-evasive creatures (and I HAVE cast a lot of Lhirgoyfs over the years, so trust me I know) but that is still no reason to print something so blatantly undercosted in a common format. I also think it is a beast in Limited, especially if it were in a set which resulted in ground stalls as Anusien poinyed out.
Initially you made this an X/X for 1WW. I'd be fine with it at X+1/X. That weakness against creatureless decks is sufficient to 'balance' it. Let's not pretend the card would ever be used apart from in casual, Multiplayer and Limited and at least attempt to make it reasonable in those formats. And the mighty 'goyf gets a random +1 on its asterix-infested P/T, why can't this?