Board Thread:Warhammer 40k General Discussion/@comment-86.159.94.118-20150805200234/@comment-28917471-20150806163204

None of them are capable of killing Abaddon, since they all possess no psychic abilities. You need an Alpha-plus psyker or someone even stronger to erase Abaddon from existence. Even if the Chapter Masters will somehow "kill" Abaddon, he would be just resurrected by the gods.

One swing with Drach'neyn and all of first founding Chapters Masters will meet their demise.