Someone asked for a gestalt build - The vURsatile Knight
32 pt buy
Str 12, Dex 10, Con 14, Int 14+2, Wis 16+3, Cha 14+2
Paladin of Tyranny 2/Hexblade 3/Ur Priest 2/Bone Knight 10/Chameleon 2//Feat Rogue 2/Factotum 4/Human Paragon 2/Factotum +7/Psychic Warrior 2/Human Paragon +1/Fighter 2
Feats:
Iron Will, Malign Spell Focus, Able Learner
open - 6 general, 1 feat rogue, 2 psy war, 2 fighter
Floating - 1
Skills:
bluff 6, knowledge arcana 5, knowledge religion 8, knowledge planes 5, spellcraft 8, craft armoursmithing 6, ride 6, bluff 8, disguise 8, sense motive 4
open - 150
BAB + 20
HP 30 + 17d10 + 2d8
excellent saves with mettle and evasion
Bone Knight immunities
Casts as 13th level Ur Priest, 11th level Factotum and 2nd level Chameleon, 2 psychic warrior powers.
etc. etc. etc.
Edit to add: If you take a flaw and take DMM, extend spell, persist spell, silent spell, still spell and empower spell as your general feats then at level 15 you can use Miracle to sub for Aspect of the Wolf and Awaken for self awakening shenanigans and hence an intelligence in the mid 20s and arbitrarily high charisma.