PHB 3.5 p310 (glossary) (my emphasis):... a creature suffers a -1 penalty to all skills checks, ability checks, attack rolls, and saving throws, plus a -1 effective level penalty...
So yeah, looks like it crept in with 3.5E, but I don't have a 3.0 DMG or MM to check other entries for consistency.a creature takes a -1 penalty on all attack rolls, saving throws, skill checks, and ability checks, loses 5 hit points, and takes a -1 penalty to effective level...
Enervation:
...
If the subject has at least as many negative levels as HD, it dies. Each negative level gives a creature a –1 penalty on attack rolls, saving throws, skill checks, ability checks, and effective level (for determining the power, duration, DC, and other details of spells or special abilities). Additionally, a spellcaster loses one spell or spell slot from his or her highest available level. Negative levels stack.
Assuming the subject survives, it regains lost levels after a number of hours equal to your caster level (maximum 15 hours). Usually, negative levels have a chance of permanently draining the victim’s levels, but the negative levels from enervation don’t last long enough to do so.
An undead creature struck by the ray gains 1d4x5 temporary hit points for 1 hour.
Abraxas said:Is the loss of 5 hit points for every negative level gained something that was added in 3.5?
Perhaps it´s something like a "plot item":Lasher Dragon said:Abraxas - are you playing in some really low magic world, or one where you cannot buy/create magic items? Maybe I'm the only one, but this is the first I've heard of someone willingly carrying around anything that imposes a negative level. Seems like one helluva price to pay... it would have to be damn near an artifact for me, or most of the people I game with, to consider carrying it.