Upper_Krust said:
Hi Xeriar mate!
Well you don't get to 200th-level living in a bubble!
Well, you don't get to 200th level much at all, period

. It wasn't my number, anyway. A hundredth-level character would be more definate.
However, I'll humour you - since otherwise you don't even have a whisker of a chance.
If given nonstandard items, the dragon has different chances. Dropping the fighter in the middle of the Pacific Ocean and preventing his access to food or water for one
But I initially stated 'with no magic items', thats not to say he doesn't own them; simply that he doesn't have them with him.
This was Anubis's deal. You kinda hafta construct the fighter to beat the Dragon, rather than have just any odd assortmant of feats.
Seemingly you are already giving the Prismatic Dragon 'equal benefit' with its immunity to critical hits.
Not exactly - if we're to assume that said dragon has his treasure, or with his auto-sorcerer levels knows a spell that grants him immunity to critical hits.
Really!? How would it beat his Spell Resistance to do so!?
Not all spells are affected by spell resistance - Maze, etc.
Especially as the spell is targetting spell resistance itself

Wishes can restore Dead Magic Feilds in FR - why do they need to be subject to SR?
Have you extrapolated a 200th-level Monk or Ranger - they are just as frightening!
The Ranger is nasty because he can get around the critical hits, and has that auto-bane feat. The Monk is just... wrong.
Naturally. In that case there may be feats from other sources too!
True dat, I think this would be a more applicable source of the original spell resistance, myself.
In my estimation non-standard items levels out with the Fighter having Spell Resistance.
Without the ability to deal critical hits, the fighter and the dragon are at an impasse - they still can damage eachother, but the damage is meaningless. In order to damage the dragon, the fighter has to sacrifice too much of his BAB to hit often enough, and of course whatever damage the dragon's breath deals the poor sap is going to get healed in short order anyway.
I'm not really concerned about the dragons attacks.
The dragon has a vast array of abilities available to it, I don't think the fighter could say, both spot illusions and break through a Wall of Force, and all the other neat tricks the dragon could pull off...
Seemingly Imprisonment is the only shadow of a chance (provided the Fighter doesn't have Spell Resistance) the dragon has.
Wall of Force, pemenance, then let him starve to death
If we start buffing the dragon with non-standard items AND disallow the Fighter any Spell Resistance then hes seemingly going to succumb to the Imprisonment spell* before he can effectively eliminate the dragon.
He doesn't need non-standard spells or items, jjust Iron Body.
*which doesn't actually kill the Fighter lets add!
Nope, unfortunately, but it gives the dragon an eternity to prepare something the fighter can't deal with.
Any other way you slice it the Fighter wins, devoid of any magic items. Of course the initial supposition was that even with their items (assigned under the auspices of my equipment formula) a 200th-level character could NEVER defeat a Great Prismatic Wyrm - something I have categorically proven to be inaccurate.
I did not make that claim - but you made it out to be far easier than it would actually be.