There’s something undeniably compelling about Vikings, and Joe Pruett and Marcelo Frusin have tapped into that primal fascination with their new series “Viking Moon.” The premise alone had me hooked from the moment I cracked open this first issue. We all know the historical narrative about Norse expeditions to North America, but Pruett asks a tantalizing “what if” question that transforms this historical puzzle into something much more sinister. What if it wasn’t just the natives that drove the Vikings away? What if something far more dangerous prowled those dark forests?