Well, I come with odd news... I suppose it's good news, but it just so happens to also be ridiculously horrible news at the same time. Once again, my challenge has proved numerous people dead wrong. If anyone writes, or tells you Sanctuary Keeper is impossible on NSGIENC, they're MISTAKEN! Sanctuary Keeper is indeed possible, but almost by the lowest means you could consider possible possible. I would guess that it is a 1 in 5,000 chance you'll win, and that's even being nice on the odds. So here is the low down for all of you just dying to hear.
Sanctuary Keeper DOES in fact ALWAYS strike first, they were no doubt right about this, I don't know if he has initiative or just higher speed than any of your characters, but I played him 30 times or so, and he always went first, without fail...
Sanctuary Keeper ALSO ALWAYS uses Photon Wings as his first attack, no matter what. Both of these things were correct, they happen every single time, without fail...
So... How is this possible you might be asking? WELL I'll tell you.
Auron's base HP is 1030, and guess what. At base stats, with initial equipment and no customization, Photon Wings OCCASIONALLY only does 1000-1030 damage, leaving Auron with 10 or 20 HP every now and then. SO! Every few tries, I end up with one guy, with roughly 1 to 30 hit points who now gets a turn! Sound too good to be true? Well, don't worry.. It is... Photon Wings doesn't JUST do damage. It also infects you with almost every status effect in the game, so you'll either sleep through your turn, or you'll be confused and waste your turn and then get slaughtered. but GUESS WHAT, if you're lucky enough to have made it this far, you MIGHT randomly not get sleep OR confuse. In this rare, rare, rare, rare, rare case, you'll see the menu pop up, and you'll have yourself a turn!
Don't get too excited, you've FAR from won. This is the only way I can see the battle being won, note the EXTREME luck involved.
>>Enter battle with Kimahri, Wakka, and Auron
>>Sanctuary Keeper uses Photon Wings
>>Auron takes less than 1030 damage and does not recieve sleep or confuse status
>>Auron switched to Rikku
>>Rikku uses chocobo feather on herself
>>Sanctuary Keeper physically attacks Rikku (must miss*)
>>Rikku uses phoenix down on Wakka
>>Rikku mixes Trio of 9999
>>Sanctuary Keeper uses physical attack (must miss*)
>>Sanctuary Keeper uses Mana Blast
>>If Wakka is alive, uses attack reels (OVERKILL)
>>If Rikku is alive, uses fire/water gem (OVERKILL)
*=This method is theoretically possible, therefore meaning, contrary to popular belief, this battle is NOT impossible to win, just very, very, very, very, very improbable. Rikku and Wakka have an evasion stat of 5 which basically means they have ALMOST no chance of being missed, but again, it IS possible, just an extremely rare occurance. Sanctuary Keeper must miss twice in a row in this battle, the odds of that must be outrageous, but with enough persistence, it will eventually happen...Hopefully.
So there you have it. This challenge can go beyond this point, how long it takes me to actually get there, god only knows. I don't expect to beat this guy in the near future, the luck required for this is insane.