[Ozymandias]

Some discoveries:

#aoe seems to be a signed int. Setting it to (2^15)-1 (or 32767) causes your spell to effect the entire battlefield. Values of 2^15 or greater yield negative areas.

For #effect 10, #damage 2^13 gives the Breath of Winter effect, +100 cold resistance and Chill 6 + water magic levels. The mystery bits for #damage at 2^[6,9,21,22,23,25,29,30,31] have among them Flaming Arrows, and an effect that causes the subject to become a Prophet!

I ran a test on #effect 23 with a #damage value of (2^32)-1 (i.e. all bits 0 through 31 set) and got the following results: mirror image, regeneration, fear, trample, mistform, charge body, fire shield, astral shield, twist fate, mossbody, ritual of returning, inner sun, twiceborn, dragon master, hell power, unholy power, reinvigoration, invulnerability, soul vortex, +4 fire, +3 air, +4 water, +4 earth, +3 astral, +3 death, +4 nature, and +3 blood. It looks like #effect 23 is used to make some of the rituals work, as well as all the various path boosting effects (+1 to all from Light of the Northern Star, +2 to all from Hellpower, and various +1s from individual path boosters). This makes me suspect that the regeneration is tied to the +1 nature effect.

Notable effects that still haven't been discovered are Communion Master, Communion Slave, Haste, Friendly Currents, Berserkers, the 100% resists, Legions of Steel, and Blood Vengeance. It also isn't clear where all the negative spells like Curse and Horror Mark are found.

I did some tests on #spec also. The spell modding section of the modding manual gives the values for bits 6, 7, 12, and 23 ("armor piercing", "armor negating", "magic resistance negates", and "can be cast underwater" respectively), only two other bits caused changes in the spell description. Bit 24 yields "magic resistance negates easily" and bit 29 is another "magic resistance negates". I assume that bit 29 is the magic resistance roll at -4, although being certain of that would take more testing. I'm guessing #spec has all sorts of possible restrictions like doesn't effect lifeless, effects undead, effects demons, effects national troops, is an [insert element] effect, is a mundane effect, can be dodged, cannot be cast on land, and others. I think this field will be extremely tedious to test, maybe we could get some more revelations from on high as to what the various bits are for.