Alright, Demilich is pretty much done. ^^; Item selection and feats are completed, and I've got a full stat block for her below. Plus, if she doesn't mind elementals, I can even give PaleEnchantress her M/M fun without having to make a second character.
I have to admit, though, the way save DCs are determined for epic monsters and templates is a little nuts... >>;
Demilich, Pleasure Devil Demilichfiend of Possession 6/Marshal 1/Cloistered Cleric 1
Size/Type: Diminutive Undead (Augmented Outsider, Baatezu, Evil, Lawful)
Hit Dice: 22d12 (132)
Speed: fly 180 ft. (perfect)
Armor Class: 59 (+4 size, +8 Dex, +12 natural, +8 armor, +5 deflection, +22 insight), touch 47, flat-footed 51
Base Attack/Grapple: +17/+9
Attack: touch +47 (10d6+20 and poison or 10d6+20 and paralysis)
Full Attack: touch +47/+42/+37/+32 (10d6+20 and poison)
Space/Reach: 1 ft./0 ft.
Special Attacks: Beguile, Fear Aura, Fiend of Possession abilities, Paralyzing Touch, Poison, Spell-Like Abilities, Spells, Summon Baatezu, Trap the Soul
Special Qualities: Baatezu traits, Damage Reduction 15/Epic and Bludgeoning, Immunities, Magic Immunity, Phylactery Transference, Rebuke Undead, Resistance 20/Acid and Sonic, Spell Resistance 24, Tongues, Turn Resistance +28, Undead Traits
Saves: Fort +23, Ref +30, Will +31
Abilities: Str 18, Dex 27 (33), Con --, Int 23, Wis 24, Cha 42 (48)
Skills: Bluff +44, Concentration +37, Diplomacy +51, Hide +74 (or 49 while possessing), Knowledge (arcana) +25, Knowledge (dungeoneering) +25, Knowledge (nature) +25, Knowledge (religion) +25, Knowledge (the planes) +25, Listen +51, Move Silently +66, Sense Motive +52, Spellcraft +32, Spot +51
Feats: Automatic Quicken Spell-Like Ability (B), Blinding Speed (B), Dodge (B), Knowledge Devotion (B), Mobility (B), Skill Focus (Diplomacy) (B), Tenacious Magic (B), Education, Ability Focus (Beguile), Mindsight, Arcane Mastery, Boost Spell-Like Ability, Summon Elemental, Craft Wondrous Item, Additional Item Space (Face)
Challenge Rating: 27
Equipment: 760,000 - 760,000 = 0 gp
Phylactery and 8 Soul Gems -270,000
Ring of Evasion -25,000
Ring of Freedom of Movement -40,000
Ring of Protection +5 -50,000
Ghost Ward Gleaming Greatreach Bracers of Armor +8 -146,000
--Crystal of Adaptation, Greater -3,000
Hathran Mask of True Seeing -75,000
Cloak of Turn Resistance and Charisma +6 -47,000
Gloves of Dexterity +6 -36,000
Boots of Big Stepping -6,000
Belt of Battle -12,000
Veil of Allure -14,000
Hand of Glory -8,000
Vest of Resistance +5 -25,000
Handy Haversack -2,000
Quaal's Feather Token, Whip x2 -1,000
Beguile (Su): Demilich can temporarily gain control of a living creature. When Demilich uses this ability, she gains immediate control of the creature, which immediately takes a full turn's worth of actions under her control. Demilich can use this ability up to two timed per day on any living creature within 30 feet that fails a DC 29 Will save. This is a mind-affecting enchantment ability.
Damage Reduction (Su): Demilich has damage reduction 15/Epic and bludgeoning. Vorpal weapons, no matter their enhancement bonus, ignore this damage reduction but do only half damage to Demilich (she cannot be beheaded).
Fear Aura (Su): Demilich is shrouded in a dreadful aura of death and evil. Creatures of less than 5 HD in a 60-foot radius that look at Demilich must succeed on a DC 42 Will save or be affected as though by a fear spell from a 22nd-level sorcerer. A creature that successfully saves need only make a DC 35 Will save upon subsequent exposure for the next 24 hours.
Immunities (Ex): Demilich has immunity to charisma damage and drain, cold, electricity, fire, poison, polymorph, and mind-affecting attacks.
Magic Immunity (Ex): Demilich is immune to all magical and supernatural effects, except as follow. A shatter spell affects Demilich as if she was a crystalline creature, but deals half the damage normally indicated. A dispel evil spell deals 3d6 points of damage (Fort save for half damage). Holy smite spells affect Demilich normally.
Paralyzing Touch (Su): Any living creature Demilich touches must succeed at a DC 53 Fortitude save or be permanently paralyzed. Remove paralysis or any spell that can remove a curse can free the victim. The effect cannot be dispelled. Anyone paralyzed by Demilich seems dead, though a successful Spot check (DC 20) or Heal check (DC 15) reveals that the victim is still alive.
Phylactery Transference (Su): Headbands, belts, rings, cloaks,and other wearable items kept in close association with Demilich's phylactery transfer all their benefits to Demilich no matter how far apart she is from her phylactery. The standard limits on types of items utilized simultaneously still apply.
Poison (Ex): Contact, Fortitude DC 40, 1d6 Wis/1d6 Wis. The save DC is Charisma-based and includes a +2 racial bonus.
Resistances (Ex): Demilich has acid resistance 20 and sonic resistance 20.
See in Darkness (Su): Demilich can see perfectly in darkness of any kind, even that created by a deeper darkness spell.
Skills: Demilich receives a +20 racial bonus on Hide, Listen, Move Silently, Search, Sense Motive, and Spot checks.
Spell-Like Abilities: At-will--astral projection, augury, charm monster (DC 35), quickened clairaudience/clairvoyance, create greater undead, create undead, quickened death knell (DC 51), enervation, quickened enthrall (DC 33), greater dispel magic, greater teleport (self plus 50 pounds of objects only, CL 24), harm (DC 51), mark of justice, morality undone (DC 36), quickened produce flame (+25 melee or +29 ranged touch), quickened suggestion (DC 34), quickened summon monster I-III (CL 23), summon monster IV-IX (CL 23), telekinesis (DC 51), quickened vampiric touch (+25 melee), weird (DC 51); 1/day--plane shift (self only), trap the soul (DC 37)
Spell Resistance: 24
Summon Baatezu (Sp): 1/day--80% chance to summon one harvester devil, two chain devils, or six lemures; CL 22. This ability is the equivalent of a 6th-level spell.
Telepathy: 100 ft.
Tongues (Su): As the tongues spell; always active; CL 22st.
Trap the Soul (Su): Demilich can trap the souls of up to eight living creatures per day. To use this power, she selects any target she can see within 300 feet. The target is allowed a DC 53 Fort saving throw. If the target makes its saving throw, it gains four negative levels (this does not count as a use of trap the soul). If the target fails its save, the soul of the target is instantly drawn from its body and trapped within one of the gems incorporated into Demilich's form. The gem gleams wickedly for 24 hours - at the end of that time the soul is completely absorbed, and the victim is forever gone. If Demilich is overcome before the soul is eaten, crushing the gem releases the soul, after which time it is free to seek the afterlife or be returned to its body by the use of either resurrection, true resurrection, clone, or miracle. A potential victim protected by a death ward spell is not immune to trap the soul, but receives a +5 bonus on its Fortitude saving throw and is effective against the level loss on a successful save.
Turn Resistance (Ex): Demilich has turn resistance +28.
Undead Traits: Immune to poison, sleep, paralysis, stunning, disease, death effects, necromantic effects, mind-affecting effects, and any effect requiring a Fortitude save unless it also works on objects. Not subject to critical hits, nonlethal damage, ability damage, ability drain, or energy drain. Negative energy heals. Not at risk of death from massive damage, but destroyed at 0 hit points or less. Darkvision 60 ft.
Fiend of Possession abilities: Demilich has six levels in the fiend of possession prestige class and all class abilities thereof. The DC for all of her class abilities that require saves is 37.
Cloistered Cleric abilities: Demilich has one level in the cloistered cleric class, granting her 22 uses of Rebuke Undead, a +7 Lore check, 3 0th-level spell slots, 3 1st-level spell slots, and one 1st-level domain spell slot from the Knowledge, Pleasure and Trickery domains.
Marshal abilities: Demilich has one level in the marshal class, granting her Skill Focus (Diplomacy) as a bonus feat and the Motivate Dexterity minor aura.