C322 Borrowing a knife to kill someone

"I'm sure master has already guessed that I need at least the material of a saint artifact in order to store a wisp of my will. Also, this wisp of will needs to be nourished at all times so that it won't be attacked by the artifact spirit. Only then can it be preserved." Blood Demon immediately replied.

"That's fine. I believe that the Dark Saint will not reject." Xue Tian laughed