With this build you can end up with saves in the 50’s and an AC above 100 with the values getting even higher if you use both kinds of smite on chaotic evil bosses. Double smite (chaos and evil) allows you to destroy nearly any boss by leveraging your charisma into even more AB, AC and saving throw buffs against that target. Saving throws will also be extremely high. In the end you can easily end up with AC values above 100 and will be nearly untouchable.Prescient attack lets you target flat footed AC vs annoyingly tanky enemies Sword saint with chosen weapon bite is active no matter what you equip because of the wolf-scarred curse and gives +6 AC with 22 intelligence (achievable with buffs).Hell Knight gives you smite chaos which stacks with smite evil on the same target.Wooden Flesh exploit gives you mind affecting immunity and +2 AC while active.Vivisectionist 2 cognatogen gives +4 charisma and +2 AC which is great given how powerful charisma has become with this build.Instinctual Warrior gives wisdom to AC and rage.Paladin gives you charisma to saves and smite evil,.Witch of the veil gives +5 AC with the iceplant ring in act 1 and lets you become invisible as as swift action at will (enjoy the concealment and flat footed attacks), also gives access to mage armour so you can use archmage armour without potions or scrolls, amazingly powerful dip.

Scaled fist gives charisma to AC again meaning you get double charisma to AC and evasion (no damage if you reflex save on fireball and similar spells).

Nature’s Whispers Oracle gives charisma to AC (replaces dexterity).

Dodge pathfinder