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Okay it was FAQd you can't use the Carstein ring should your opponent roll an 11 or 12 for S on Infernal Gateway. Waht if you miscast and roll a 2, does the ring bring you back from that?
If a Million Guardsmen die, that's a statistic. If one marine dies, that's a tragedy.
It would almost certainly be the same as Gateway
Since he must be "slayed", it is rather clear He cannot return after being consumed by the Chaos Gods, but must have been slain by Mortal Hands (either Magic, Ranged or Close Combat attacks).
Hope It Helps!
//Nagash, the Immortal
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