Talk:Nightblood/@comment-90.128.237.242-20180811145426/@comment-27794543-20180812015959

Given that the Grounders have the Nightblood gene and the Flame, we can conclude that at some point members of the cult chose to use the serum and to implant the Flame. How and when that came about is a mystery. Maybe Madi will have flashbacks of the second commander?