Just curious... say Horus had passed the test at Davin, which primarch would have been the next likely candidate for the Heresy to have formed around and why?
when eactly did Typhus become corrupt with Nurge and how, i could never find this out.Lorgar would of created the Heresy if Horus didnt fall to chaos, because it was Lorgar who decided to turn Horus to chaos. So yeah it would become the Lorgar Heresy. Though Typhus/Typhon would still of likely corrupted the Deathguard, Magnus would end up still having to deal with Tzeentch. Angron would be turned pretty easily, Alpharius im not sure about, Fulgrim would most likely remain loyal. and Perturbo im not sure.