Ren didn't expect to give a detailed report either, but he just did. Perhaps it was the Gamer in him, not the power but what he did for a hobby, that liked to give such detailed reports on bosses. It was quite the thrilling fight after all, deep down, and all of this was quite exciting, despite the fact that people died, but Ren hid his excitement with incredible skill to the point where he sounded bored. 

"Its just a Spell I learned. Turns out actual spells are different than the Skills we know..." Ren looked at the book that Sasha handed to him, attempting to learn it, but no luck. He shook his head. "Nope, I only meet the WIS requirement..." Ren handed the book back to Sasha. "If you feel that you can eventually learn it though, try to do so. Spatial Magic is what a mage we fought in here in a previous room used on us, and that stuff was indeed incredibly powerful. I think that Blank Mage copied and used the same thing..." Ren continued looking at books, before finding one that he thought suited him, so he pulled it out. 

He tried to learn it, but to no avail, so he just stuck it in his inventory, not really caring if anyone noticed or not. They hadn't found what they initially came for yet, so Ren figured might as well try to benefit from all of this somehow.