Originally Posted by
Peelee
You're pointing out how common knowledge of Phylactery is by pointing out that the protagonists now know? It apparently IS rare knowledge. Eugene didn't even know until after Redcloak and Xylon talked through it after he died!
Also, as I previously said, There is a huge information blackout on Xykon. Dude flies under the radar. Research yields almost nothing. Saying Roy could have learned this by research is like saying you can become CEO of a Fortune 500 company by going to college. Yeah, it can happen, but your grossly oversimplifying here.