Board Thread:Warhammer 40k General Discussion/@comment-86.159.94.118-20150805200234/@comment-5880884-20150807071802

The marks do not make Abaddon immortal per se. He can be killed, but he is so favoured by the gods that they will ressurect him if possible. Also, it seems that the gods are forever watching over Abaddon to prevent him from getting snuffed out. Remember, Eldrad came so close to killing him before the Chaos Gods teleported Abaddon out of harms way. There is no doubt that if the Chaos Gods were too slow in teleporting out Abaddon, he would be destroyed for all eternity.since the Staff of Ulthamar had the psychic power of an entire craftworld.