Board Thread:Warhammer 40k General Discussion/@comment-108.51.155.155-20131208175717/@comment-7390107-20140429021616

Well if we take that Abbadon has dozens of deamon pacts i would say that any primarch returning could kill him in a "mortal" way but the problem with that is that Chaos Gods would resurect him...I'm stating this because none of the remaining loyal primarch are not psykers

Some of them have show few psyker abilities but none of them even traitor ones (not counting Magnus)  have shown any powerfull psyker abilities...

In a primarch vs abbadon fight i would put money on primarch (any primarch)