Though, he was not stupid to openly sacrifice people in a ritual in the North. Not that he would even consider doing it again here. The title 'Defender of the North' was something he took seriously. But other places were fair game. If he wanted to do ritual sacrifices, he could always fly to the Iron Isles, and take lives as he deemed fit. After all, he would be taking them by force and thus paying the iron price, so the reavers couldn't truly complain. And nobody would cry if there were fewer of the blasted pirates.