Herein lies the problem with the Steam Tank: I hate it enough that I feel compelled to try and kill it regardless of the cost, occasionally at the expense of actually winning the game. While I'm still perturbed that they made it T10 now, being able to nerf and fry it takes some of the sting away.
Edit: The odd thing is, it still says the thing is immune to Pit of Shades for some reason. I'd assume it would test off the Initiative 3 of the commander, so it still would have a decent chance of surviving; maybe they'll fix it in the next update.