Inflict wounds/negative energy output optimization

[Jicnon]

We are starting at lvl 14 with access to any book and some of dragon magazine in a campaign I am about to start. I came up with an idea to try to create a character that uses inflict mass wounds and similar spells to heal allies (who agreed to take Tomb Tainted Soul), while hurting enemies. I am trying to figure out the best way to go about this (combination of classes and PrC) so any advice you all can offer or guides you can point me to would be greatly appreciated.

[Kane0]

A metamagic abusing build (incanteix and whatnot) using negative energy ray / burst would he a good start. Plus you get all the other benefits of being a full arcane caster.

Youd probably want to find better spells than those after a while though.

Edit: the mailman handbook thats floating around somewhere might be of use to you, you can use it to maximise the damage your spells deal, just pick a negative energy spell and your good to go.