What?! It was in the deck, so it must have been a good card, and that is all there is to it right??

Missiles & flamewaker are plenty of aoe

Are you sure Grom belongs here? It looks pretty out of place, as a revenge or slam will have to be used to activate the enrage (possible, but not ideal), and there are better options for removal than an 8 mana 4 attack charge.

The deck is also built around a more removal-heavy, fatigue-y playstyle (with the doomsayers, scarabs, alex clearly for heal, etc, and I don’t see Grom fitting well into the synergy here.

As outlandish as it may sound, Fibonacci may have had the right idea – it really looks like tentacles for arms would be a better card than grom in this list, and possibly a decent card in general for more stall-heavy control warrior builds.