It is an untyped damage. Honestly, vampiric touch and disintegrate should probably be the same (they were untyped damage in source). Disintegrate might have originally had magic damage for that, though this server introduced a fair few magic DR items.enginseer-42 wrote:Uh. How did you damage an undead with Negative energy?
Negative energy damage is just a placeholder, since untyped damage doesn't actually exist mechanically in nwn2.
The way you implement untyped damage is like vampiric feast. You insert any damage type and make it bypass any DR or immunities for that damage. That is the best way.
The way it was done for most of the spells/abilities, was to put it on a damage like magic, which no creatures in the campaign had resistances to. Though, that solution wasn't really thinking far to PWs. Probably easier to do on their part though, and bugsidian was all about getting this out ASAP.
Plenty of things are like that. Greater Ruin, for example, does "positive energy damage" to replace untyped damage.
That is the reason it is like that.