Have you seen my list though? It is not like typical shop aggro lists. I think what matters in a deck with no draw engine is consistency. So in turn I run mostly 4 ofs. Running the one of Batterskull would skew that idea but it might be worth it in the long run. I just want to hear people's thoughts about the subject.
Unless the list in question is running Stoneforge Mystics, I would think that Sword of Fire and Ice is strictly superior as a random one of. SOFI can be cast off a single shop and it draws cards, gives protection, and can kill weenies. The only thing that Batterskull has going for it when mystics are not in the equation are that it counts as a creature of sorts with null rod in play.