Just opened the pack of my life. Really needed that Grommash too, I dread warrior quests since my deck is so terrible.
Grom is a great win condition, but also pretty awkward since he requires aggressive play to get the opponent to 12 health, can't be played until turn 8, and requires Inner Rage to reach his full potential on that turn (unless something weird happens like getting played into a Snipe/Explosive Trap). Even so.. if you don't have Grom you really can't play Control Warrior.