A Character Built Around Inflicting Negative Levels and Ability Drain

[Emparawr]

Well I think the title says the most about what im looking for, different ways to inflict negative levels and ability drain. My friend is making a character that is most often an incorporeal vapor cloud that casts arcane spells and when it wishes to actually kill living creatures it does so by literally draining the life out of them. In this respect I have been looking at the Dread Specter Template being applied to something for his race/racial levels as that will allow him to inflict 2 negative levels with each hit of his incorporeal attacks.

So what im looking for now is more ways for him to be able to inflict negative levels and to be able to drain ability scores. I have not been able to find a write up or thread about it anywhere for Pathfinder so I'm hoping for some help on this one. This method of attack for him is essential to his character so I want to give him as many options as I can for being able to do these two things when he wishes. I am completely open to any ideas anyone has.

Thanks in advance guys n gals :)

[Darksol the Painbringer]

Inflicting Negative Levels and Ability Drain is an extremely powerful ability to give a PC, especially in the lower levels, and is not something to be taken lightly. He will end up one-shotting everything from level 2-3 and lower, and trivializing several encounters until you get to the mid-high levels.

However, it isn't out of the question, but is not something that should be considered until later in levels (about 6 or 7 is when you start to encounter ability/level drain creatures). It's also important to note that inflicting penalties to modifiers in combat is similar to Ability Drain. There are several spells that accomplish this from Cleric and Wizard spell lists; Wizards even get Enervation as a spell, which drains levels and deal damage.

There is also a sword that gives negative levels on a critical hit, something which he should search for; perhaps as part of a main quest to be his weapon of choice. Being an Elf Wizard (probably Necromancy specialist) would allow proficiency with this, as well as greater spellcasting which accomplishes his goal.