[3.P] Undetectable Resurrecter

[ImperatorK]

I need to make a character that can do the following things:
1. Stay undetected, both from mundane and magical senses, as best as possible, as long as possible.
2. While undetected:
a) stay in a touching distance or
b) have means to get in a touching distance of an ally and, if possible,
3. True Resurrect him or use some other touch spell/ability that doesn't give any penalties to that ally, preferably in the same round he got killed (I don't mean on the enemy's round, just as soon as possible).
4. Go back to point #1, if possible (or necessary, otherwise go to point #2).
5. All that at least more than once a day, in case the ally dies again.

You have 18 levels for that. The above is the primary concern, it's the most important purpose of the build, its role. As a secondary role it will be a general healer.
Which class is best for that?
Any ideas or suggestions on the build?
Any questions?

[Maat Mons]

I've been meaning to ask this for awhile.  Is 3.P shorthand for Pathfinder, or is it shorthand for a cross between Pathfinder and 3.5/3.0? 

If 3.5 material is available, revivify (Spell Compendium, p176) is a 5th-level spell that can resurrect someone without level loss.  War weaver (Heroes of Battle, p112) would allow you to use that on multiple allies simultaneously.  War weaver would probably require either wyrm wizard (Dragon Magic, p55) or recaster (Races of Eberron, p157) to get the spell onto an arcane list though.  Hierophant or archmage would allow you to use touch range spells without touching. 

[Gazzien]

I've been meaning to ask this for awhile.  Is 3.P shorthand for Pathfinder, or is it shorthand for a cross between Pathfinder and 3.5/3.0? 

If 3.5 material is available, revivify (Spell Compendium, p176) is a 5th-level spell that can resurrect someone without level loss.  War weaver (Heroes of Battle, p112) would allow you to use that on multiple allies simultaneously.  War weaver would probably require either wyrm wizard (Dragon Magic, p55) or recaster (Races of Eberron, p157) to get the spell onto an arcane list though.  Hierophant or archmage would allow you to use touch range spells without touching.

In my usage and interpretation, it's the mix; [PF] is pathfinder-only.
Also, in Pathfinder-only, you still have Psionic Revivify. So... shenanigans to give it reach, or something.

[ImperatorK]

[3.P] is PF+3.X. That's how I'm using it and how I saw it used almost anywhere I've seen it.

It's important that the revive is made with a touch, so don't worry about making it ranged.

[Sinfire Titan]

The Greater Mark of Healing can provide Revivify as an SLA 1/day (no components needed), but it requires an additional feat beyond Greater Dragonmark.

[Maat Mons]

As far as I can recall, superior invisibility (Spell Compendium, p125) is as good as it gets for going unseen.  That's an 8th-level sorcerer/wizard spell, but arcane disciple (Dragon 311, p49) can add it to your cleric spell list.  It's personal range (as one of the options), so you can do the usual divine-metamagic-persist thing. 

[Iainuki]

You can foil most extraordinary forms of detection with either Darkstalker (LoM) and high Hide and Move Silently plus hide in plain sight or superior invisibility.  The CAr version of the spell lasts 1 hr./level but doesn't stop blindsight, the SC version lasts 10 min./level and does, so if you have to use the CAr version, you'll have to figure out an additional way to beat blindsight.  True seeing also works against superior invisibility.   Next, you need mind blank to take out divinations, both long-range scrying and close up spells like true seeing.  Be prepared to argue with your DM because the interactions of spells like true seeing and mind blank are not well defined.  After that, you still have to worry about supernatural abilities like lifesense that aren't technically divinations.   Becoming undead or otherwise non-living will help against lifesense in particular, but there are other monster detection abilities that that might not stop.

[nijineko]

healer can true res for free once per... week i think. probably not optimal for this purpose.