While I completely understand where people are coming from. I'd like to make a small point.
Mages have abysmal Hp.
Like, Jokingly low.
Even with a good deal of con, you'd be pressed to get over 50 Hp before level 7-ish, I'd imagine, though I'm no expert on building.
As one of the people packing this spell at the moment, I'll tell you now i've only used it on one PC, and they made the save. Thankfully that was in jokingly bad Arena PvP.
Using it in serious PvP, the term "Gunshy" comes to mind. While this spell with the two DC boosting feats I have (Even though I did not take them for the sole purpose of boosting PhK), People can still make the save.
They do that, where does that leave me?
Likely dead.
PhK, like all magic, is strong but not unbeatable. Even with the higher end feats.
If you make the save, Its quite assured I, with my abysmal Hp, will likely be downed in one or two hits.
KD, or Sneaks, Or a simple hasted warrior, vs. a Mage is just as much as a death sentence as PhK vs. Non-casters. KD does damage plus makes us unable to run. That's endgame. Sneak Attacks alone could drop a mage in one or two hits if you're high level facing a high level wizard. A Hasted warrior gets an extra attack per round. Two or Three attacks in one round? Shit. Dead mage.
Its interesting, this experience, because I've never on an RP server had an illusionist get to level 7 for this spell, before EFU. The PhK stigma is something of an enigma. We've all heard of the WOLOL PHK FROM INVIS attacks, yet in all honesty, I would put it up there on par with Sneak Attacks, now that I've experienced having it.
When you play a rogue, and go to fight someone, you usally hit them with Hold Person, or Colorspray, or a Tanglebag, or KD, to hold them so you can throw down your sneaks. People don't seem to complain about that as much as PhK, when the end result is practically the same.
Is it the fact that its so "BAM", instant?