Hey, all. For a while now I've worked on the highest diplomacy build. (Barring Jumplomancer or loops.) Here's what I've come up with.
So far my build has, effectively,
284 diplomacy. 279 if you don't think that Visage of the Greater Deity gives the racial stat bonus of a Half-Celestial.
291 if I am willing to use DCFS and 3e feats. (Explained below. Also, the Diploficer always take ten and does't take a -10 penalty for rushed on diplomacy checks.)
Build: Warlock 1/Binder 1/Marshal 1/Cleric 1 (Charm and Joy Domain)/Artificer 16
Race: Old Magic Blooded Unseelie Fey Half-Elf (24 Charisma. 34 With Tomes and levels.)
Flaws: Murkey Eyed, Non-combatant
Traits: Polite, Illiterate (For a +2 Diplomacy)
Feats: Complementary Insight, (Synergy bonus goes up to +3,) Celestion Scion - Cranden, Nymph's Kiss, Negotiator, Vow of Peace, Sacred Vow, Item Familiar, Leadership, Obtain Familiar (Pig,) Skill Focus Diplomacy*, All the crafting feats plus Extra Rings/Attune Magic Weapon/the Artisan Feats* (I still have one feat left, too!) *Means I got it as a bonus feat
Magic Items: (Many of these items can be 1/day because they last so long. Regardless, well within a level 20 Characters WBL. Enough so we could buy extra items to consume to fuel the XP costs. But we shouldn't need to with the craft reserve.)
Charisma BoostersNixie's Grace, +8 Cha.
Devil's Ego, (Magic Item, Command Word, keep casting until +5)
Snowsong, +4 Cha.
Righteous Aura, +4 Cha.
Visage of the Greater Deity, +4 Cha
Diplomacy Boosters+30 Diplomacy Item
Voice of the Dragon, +10
CL 15 Divine Insight, +20
CL 16 Improvisation, +8
Item of Friendly Face
Pendant of Joy +5 (Greater Heroism is smarter for a morale bonus in an opposed diplomacy situation.)
Binder lets me ignore the penalty for rushed diplomacy and lets me take ten on Diplomacy checks. Warlock gives me Beguiling Influence. Marshal let's me double the Charisma bonus on skill checks.
I wear Glamerweave for +2.
Total Charisma of 66, with +4 from Charm Cleric and my FoP cohort.
Final Tally: 23 Skill Ranks, +54 Charisma, +30 Competence, +23 Item Familiar, +20 Insight, +10 Enhancement (Voice of the Dragon,) +10 Circumstance (Artificer Infusion,) +9 Synergy, +8 Luck, +6 Warlock, +5 Morale, +4 Exalted, +3 Skill Focus, +3 Pig, +3 Untyped, +2 Negotiator, +2 Perfect, +2 Circumstance, +2 Racial, +2 Traits, +2 Glamerweave, +10 d20 roll, +10 when taking -10 for quick diplomacy
Now, here is where we go crazy. I took Leadership. My Cohort? I am going to try and attract a Half-Elf. The rules don't say I can attract templates or anything, though. So I won't do it. But I am going to encourage him to be a diplomancer. I will train him in the art of diplomancy. And I will let him use all my items, even making him his own +30 diplomacy ring cause I am so nice.
I can attract class. I'm attracting a Charisma Prodigy/Binder/Warlock/Fiend of Possession, Half-Elf Kaorti. While assuming the Evil subtype, he doesn't actually have to be evil. Assuming he has 13 Charisma, I am going to age him to Venerable. He might get pissed about it. Oh, well, I can calm him down cause he is a fanatic follower. So 24 Charisma. +4 from levels, +5 from Tome. 31. I can bring it up to 60 with all my gear and his dip coming up. He can give me +3 Cha, too!
Assuming he has max diplomacy ranks, skill focus, vow of peace, celestial scion, and complementary insight, he will have a high bonus. He can take a level of Marshal, freeing up a feat slot. I am going to make him take a Sacred Vow and make out with my Nymph friend after he dips in Charm/Joy Domain Cleric, (he will serve my god, now. Remember, this is TO. If his Cohort was this good, this is the highest theoretical Diplomacy if we do it right. Barring Jumplomancy and loops.) He will also take three levels in half-elf.
Also, he should dip a level in Psion. Take Psicrystal Affinity. +3. Wizard for a Pig Familiar is an easy +3 boost.
His build is Kaorti 4/Prodigy 2/Binder 1/Warlock 1/Marshal 1/Psion 1/Cleric 1/Half-Elf Paragon 3/Wizard 1/X (Free levels) 2
I teach him to make an item familiar. If he maxes it out, that is plus 18. Final score should be 273 on his Diplomacy, (275 with Glamerweave.) His aid another gives me +27, using the expert assistance rules.
I'm assuming LA Buyoff is a no-go. If it is not, yipee for us. We can be Charisma prodigy Half-Fey. That is an extra +10 Diplomacy! But let's not assume that, it breaks the rules.
ULTRA MUNCHKIN MODEThis uses the Dark Chaos Feat Shuffle. It also throws a bunch of 3e feats into the mix. Anyway, our half-elf Cohort will take one level of Fighter and one of Artificer, giving us four lovely feats to play with. Favored, Primary Contact, Trustworthy, and Negotiator.
As for our part, we want to keep Extra Rings, Extraordinary Artisan, Legendary Artisan from our Artificer bonus feats. As for crafting feats, we will keep Craft Wondrous Item, Craft Magic Arms and Armor, and Forge Ring. We have six extra feats. Taking Favored and Primary Contact will give us plus one skill rank and let us dump an extra point in our Item familiar. Then we take Persuasive, Trustworthy, and Alluring. (Based on your opinion, Trustworthy and Alluring still give 3e bonus but the Trustworthy feat WAS updated and so won't buff my diplomacy. Oh well, it is still an Alluring Pre-req.)
The bonus is now up to 293. And we can use diplomacy against unintelligent undead, which is stupid but kinda nice utility.
Could I go any higher? What is the current record? Did I break any rules? Thanks, min-maxers!