What should the CR be here?

[Myrddin ap Taliesen]

First, I realize this is a little similar to another thread recently put up, but 1) that one got hijacked and 2) I think this is dissimilar enough to warrant its own thread anyways.

Here's the background: A Tarterian Dragon named Kelnastryx had gotten to the mortal plane and was becoming very powerful, gaining levels in Divine Ascendant and attempting to pull off a ritual that would gain him deity-hood. The gods saw this as a threat to the balance and imprisoned him back in the Tarterian Plane, along with some magical wardings to keep him there. He has spent the past several milenia brooding and gaining power.

Modern time, an insane wizard manages to free Kelnastryx and complete the ritual to grant him godhood, in the hopes of using him to conquer the world. Kelnastryx barely gives the wizard a second thought and takes off to begin his plans to conquer the world and gain vengeance upon the gods who imprisoned him.

Since his initial imprisonment, the overgod has forced all of the other gods to form a pact prohibiting them from intervening in the mortal planes, so they can't do anything directly. However Bahamut manages to sneak the adventurers some artifacts that will enable them to defeat Kelnastyx (who never was part of the pact and is not bound by it).

So here's the stats:
Very Old Tarterian Dragon (CR 20)
Lvl 12 Dragon Ascendant (CR 12)
for a total of CR 32.

He also has divine rank 1 (having just became a god). What would that one divine rank add to his CR? I don't want a discussion of whether gods should be killable or not, this is a unique circumstance. Just need some game rule help please.

 

[diaglo]

He also has divine rank 1 (having just became a god). What would that one divine rank add to his CR? I don't want a discussion of whether gods should be killable or not, this is a unique circumstance. Just need some game rule help please.

okay without slamming you for god killing.

make the CR whatever you want to make it.

 

[Piratecat]

Moved to Rules.

 

[Plane Sailing]

Have a think about divine rank 1 - what does it give you, what does it protect you from? Do you think it will make the fight twice as difficult? Half as difficult again? More?

I presume since you are setting this up as the DM you are familiar with running highly epic level campaigns so does your experience tell you?

 

[rushlight]

First, I realize this is a little similar to another thread recently put up, but 1) that one got hijacked and 2) I think this is dissimilar enough to warrant its own thread anyways.

Here's the background: A Tarterian Dragon named Kelnastryx had gotten to the mortal plane and was becoming very powerful, gaining levels in Divine Ascendant and attempting to pull off a ritual that would gain him deity-hood. The gods saw this as a threat to the balance and imprisoned him back in the Tarterian Plane, along with some magical wardings to keep him there. He has spent the past several milenia brooding and gaining power.

Modern time, an insane wizard manages to free Kelnastryx and complete the ritual to grant him godhood, in the hopes of using him to conquer the world. Kelnastryx barely gives the wizard a second thought and takes off to begin his plans to conquer the world and gain vengeance upon the gods who imprisoned him.

Since his initial imprisonment, the overgod has forced all of the other gods to form a pact prohibiting them from intervening in the mortal planes, so they can't do anything directly. However Bahamut manages to sneak the adventurers some artifacts that will enable them to defeat Kelnastyx (who never was part of the pact and is not bound by it).

So here's the stats:
Very Old Tarterian Dragon (CR 20)
Lvl 12 Dragon Ascendant (CR 12)
for a total of CR 32.

He also has divine rank 1 (having just became a god). What would that one divine rank add to his CR? I don't want a discussion of whether gods should be killable or not, this is a unique circumstance. Just need some game rule help please.

That all depends on what the artifacts the PCs have do. In this sitiuation, the CR system doesn't really apply.

I ran a campaign on a similar note. An elf was attempting to ascend, and had already attained divine rank 1. However, the PCs had artifacts that basically negated or protected them from divine rank 1 abilities. Thus in that situation, the effect on the PC vs BBEG balance is irrelevant.