OK, items:
Size: first of all, ignore the 2E size categories: they are out of date. Just go with the numerical lengths. Aasterinian and Faluzure would both clearly be of Colossal size, according to Monster Mythology (hereafter referred to as MonMyth). She is listed as being 450 feet in overall length (body 250’, tail 200’) and he as 520 feet overall (body 290’, tail 230’). Chronepsis is debatable, as he appears to have the ability to alter his body’s size between 60 feet – 600 feet in overall length at will (60%/40% split between body/tail.) 60 feet would put him just barely in the range of Gargantuan size, but of course anything larger than 64 feet is Colossal. I’m not sure how significant such a size altering ability would be in 3E rules, but it would serve its purpose in intimidation factor.
For both Aasterinian and Chronepsis, it says to “treat the avatar as a Great Gold Wyrm” and Falazure as a Great Wyrm Shadow Dragon. Therefore, I think we can assume that these gods have the powers and abilities of a great wyrm except were differences are noted. As such, see the following items. (I don’t have Monsters of Faerun with me, bear with me and give me some tips until I get home to look at it.)
Ability scores: obviously, this is something that changed a lot between 2E and 3E. removing the cap on abilities (25 formerly) leads us to have much more power for creatures, especially gods. Ability scores for a great wyrm gold dragon are 47/10/33/32/33/32. but, given in MonMyth, we have:
Aasterinian: 21/22/23/22/21/24
Chronepsis: 19/19/21/24/25/24
Faluzure: 21/20/23/21/24
Obviously, we don’t want to use those old values! But, they will be helpful in rethinking them for 3E. In DDG we have examples of Bahamut (53/10/39/35/36/35) and Tiamat (49/10/35/28/25/29) to work from, to reassign ability scores. In MonMyth they were:
Bahamut: 23/21/24/22/23/24
Tiamat: 21/20/23/19/20/24
Hit Dice: Again, we’ve got some bumping up to do. In MonMyth, Aasterinian and Chronepsis had 20 HD, while Faluzure had 17 HD. Note that a modern great gold wyrm has 41 HD! In DDG, Bahamut has 53 HD and Tiamat has 49 HD – notice how the HD and Strength score are the same!! In MonMyth, Bahamut had 22, and Tiamat had 20. maybe these other 3 gods should have slightly fewer HD than Tiamat does.
Natural Armor: well, again some increase needed, but not as dramatic. In MonMyth, Aasterinian had AC –13 (rough equivalent of AC 33 today), Chronepsis had –10, and Faluzure had –16. Bahamut had –14 and Tiamat had –12. In 3E, GGWs have a +40 natural armor, while Bahamut has 52 and Tiamat 48 (note that these are HD –1!)
Speed: These can probably convert over naturally, but we may need to futz a bit. GGW’s have speed 60 ft, fly 250 ft (clumsy), swim 60 ft. in MonMyth, these gods are not given maneuverability class for flight speed – but they are probably assumed to be A (perfect). Recalculated from MonMyth stats, these gods would be:
Aasterinian: 120 ft, fly 300 ft (clumsy?), swim 230 ft
Chronepsis: his movement rate is listed as “special”, but I don’t see anywhere that it is described further?
Faluzure: 50 ft, burrow 30 ft (poor fella can’t fly)
Bite attacks: should we standardize these as 4d8 (as Bahamut and Tiamat are in DDG) and just let the Strength adjustment take care of the rest? They had some pretty big damage in Mon Myth: Aasterinian (7d8) and Faluzure (8d8) would do a lot more damage if that isn’t taken into account.
Spell Resistance: converting over in the standard way, that gives us Aasterinian with SR 27, Chronepsis with 34, and Faluzure with 31. adjust, or leave as/is?
hmm, there’s a lot more stuff, but I have to go pretend to work.
there will be more later! (much of it non stat-related)