Talk:World Item/@comment-206.196.142.247-20150331033722/@comment-114.125.51.36-20150825182220

i think caloric stone is used to create rubedo because it stated in nigredo description

"Among all of the denizens of Nazarick, Rubedo is the strongest and most powerful NPC that can overwhelm Ainz Ooal Gown with full equipment, and stronger than Touch Me."

so it would be wise to presume that rubedo is the NPC created using caloric stone