Some warnings about your post before last, Shihong. It made for some interesting roleplay, but the knowledge would have been unknown to him even if they were in the abyss. That's more then a bit of metagaming, seeing as Magus doesn't have a single rank in planes. I try not to be too harsh on it, such as someone finding creative ways to use their player knowledge while their character remains unknowing toward it. Believably of course. Though if someone without the proper studies suddenly has monster knowledge and the like that is beyond common knowledge, the settings credibility quickly falls apart.<br/><br/>Try to keep what you know within the characters purview in the future. Background lends toward some leeway depending on circumstance and how you present it, but the situation didn't call for that here.