Ah, discovered it finally - was hidden in some creature variable that triggered custom AI. It shouldn't be something new though, and while I agree it seems rather powerful, it's perfectly compliant with the official rules:
http://www.d20srd.org/srd/monsters/shadow.htm
Not sure at this point whether we'll dither from that, but feel free to open the discussion here then...
Hmm, Well it is a Super Natural Ability. I'm fine with it either way really for one thing it will make the Shadow A very respectable Foe. No more charging into the fray of them wielding ones shadow beating stick. If it were to remain such the XP should go up since that pretty much means a couple of hits....poof you're dead.
If it does get a Save, then that's based off this: Supernatural Abilities (Su)
Supernatural abilities are magical and go away in an antimagic field but are not subject to spell resistance, counterspells, or to being dispelled by dispel magic. Using a supernatural ability is a standard action unless noted otherwise. Supernatural abilities may have a use limit or be usable at will, just like spell-like abilities. However, supernatural abilities do not provoke attacks of opportunity and never require Concentration checks. Unless otherwise noted, a supernatural ability has an effective caster level equal to the creature’s Hit Dice. The saving throw (if any) against a supernatural ability is:
10 + ½ the creature’s HD + the creature’s ability modifier (usually Charisma).
(Rex Note: Charisma is the Super Stat for most Neg Energy fueled things like Undead Critters and Shadow thingies).
Now, It would be up to the PTB to decide, but I think with the sheer Amount of Shadows, perhaps a reduction in their number, an increase in their XP reward, possibly some Loot, if they are left with the Touch Attack of "Slap Yo Mamma", Might be worth a Save.
Shadow Fiends are a different type of Critter Altogether.......Don't think people really want to run into a Real Shadow Fiend. Still though, a Touch attack Shadow right out of the book, would be a Nice addition.
~Rex