Talk:Brumm/@comment-34511663-20180129084811/@comment-40221700-20190807200322

He has to be weakened in order to be defeated, because the hunters journal entry for one of the grimmkins says "burn the father, feed the child", implying the ritual is killing him and the grimmchild growing into the new Grimm. Collecting the flames would make him immortal at that pointProving the end of the ritual During the troupe master fight, there is no harm in taking the flames, as it is not the end of the ritual yet and he would not be able to be immortal.

So the grimmchild is just hanging out with you as it grows as prepares for the next ritual. The flames are making Grimm stronger for the ritual, not helping him continue immortality.