This card is very nice, I have played with it several times. The conditions on it however keep it from being a slam dunk. If you go with Gurmash you can't put him on the front lines, or you have to carry two. There is of course Barracks but it caps out at three. And of course it can feed Battle Forge but that doesn't help with creatures (swarms), lastly there is Goblin Builder limited of course to Corporeal Conjurations.
My favorite so far is to use it to power Gurmash mid-game. That way he is throwing commands right and left. This even allows you to think about Akiro's Battle Cry in a large skirmisher type game.