| Phil. L |
use both methods if you have the time and see which one you prefer. Using the codex material probably makes the archomentals tougher if they are elementals, as the CR adjustment for elementals is +1 per 4 Hit Dice. Of course, I don't have that copy of Dragon yet, so I'm going off an assumption.
Nice avatar by the way ;)
| Shade |
The Fiendish Codex wasn't released before BOZ and I turned in our final submission for the archomentals, so we weren't privvy to the advancement rules.
I think a modified form of those rules would work, though. Elementals normally gain more HD than outsiders per HD, so you might want to give the archomentals additional HD as well.
If you really want to amp 'em up, use the paragon template from the Epic-Level Handbook (also in the SRD). :)
| Lilith |
The Archomental artist put images up for viewing at his DeviantArt site, in case anyone needs props.