Perhaps I could help to keep it out of certain hands by adding specific class features as prerequisites?
Depends, most of the class feature requirements you could think of also limit perfectly valid choices.
Neo Polymorpheus is done. He's probably too strong, because Lord of the Skull is amazingly good. So good, in fact that one of his items grants it, so you can only Abrogate one (this is actually needed, as otherwise Abrogate would get rid of Phylactery Transference, removing all his items from usefulness), and even with it twice it's still a good deal. He may not look like a combat monster now, but that's how strong he is when Diminutive and lacking any arms or legs. This is a summary character sheet, as posting all the favoured wildshape forms would use up loads of space.
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Polymorpheus (Human Dry Lich Ranger 60 Psibond Agent 10 Master of Many Forms 10 Lesser Deity of Death and Dreams), was destroyed by a Dämmerung-class anti-pantheon weapon system sent against him and several other deities, and assassins tracked down and destroyed his canopic jars. However, he was not to be put down so easily, as a powerful epic spell had been cast on his jars, which would reincarnate him if they were ever destroyed. The spell didn't quite function as intended, probably due to the interference of the assassins, and his spirit wandered alone in the desert for over a century before managing to possess an unfortunate Gloaming (who had been displaced there in a teleportation accident). This experience changed Polymorpheus forever, and once he'd regained his power, he had no concern over the realm of dreams, only able to remember the endless decades of wandering the scorching desert and his hatred towards everything alive, he's firmly committed to wiping out all living creatures in the world.
Neo Polymorpheus is a dried-out sun-bleached male Gloaming skull, with crystal eyes and soul gems for teeth. He's usually surrounded by a cloud of whirling sand which seems to contain the shadow of the body of the unknown Gloaming the skull once belonged to. This is rarely a form people see, as he's able to assume the form of almost any living creature, although all of these forms appear as desiccated corpses, somehow able to move with speed and vigour that even living specimens didn't possess.
Neo Polymorpheus
Gloaming Dry Demilich Greater Deity
Wildshape(UA)/Wastland(SSt)/Champion of the Wild(CC)/Distracting Attack(PHB2)/Arcane Hunter(CM) Variant Ranger 85(SRD)/Master of Many Forms 10(CA)/Warshaper 5(CW)
Size/Type: Diminutive Undead (3 VSCs, Augmented Fey, Shapechanger)
Hit Dice: 100d20+13,968 (15,200 hp, x4 =60,800)
Initiative: +91, Perfect, Sixth Sense
Speed: Fly 1,650 ft. (330 squares, perfect)
Armour Class: 475 (+30 Natural, +4 Size, +83 Dexterity, +100 Insight, +16 Luck, +84 Dodge, +132 Deflection, +0 Misc, +0 Competence, +16 Divine), touch 445, flat-footed 308
Base Attack/Grapple: +60/+88
Attack: unarmed strike +442 melee (2d6+133 plus 2d6 bane plus 25d6 scouring plus 4 negative levels plus 528 negative energy /20/x2)
Full Attack: unarmed strike +442/+437/+432/+427 melee (2d6+133 plus 2d6 bane plus 25d6 scouring plus 4 negative levels plus 528 negative energy /20/x2)
Space/Reach: 5 ft./5 ft.
Special Attacks: Wildshape, Wild Empathy, Aura of Despair, Fear Aura, SLAs, Morphic Healing, Trap the Soul
Attack Options: Favoured Enemy, Uncanny Power Attack Mastery, Two-Weapon Rend
Defence Options: Weapon Abatement, Elusive Target, Improved Combat Mastery
Special Qualities: Immune to Stunning, Critical Hits, Natural Effects, Old Age, Aging, Transmutation, Polymorph, Electricity, Mind-Affecting Effects, Cold, Magic (except shatter, holy smite, dispel evil), poison, sleep, paralysis, stunning, disease, death effects, critical hits, nonlethal damage, ability drain, energy drain, physical ability score damage, fatigue, exaustion, dessication, fatigue, exaustion, thirst, effects which require fort saves (unless objects), death from massive damage, necromancy, decapitation, Fast Heal 2 (54 in arid environments), Unholy Toughness, Water Weakness (Double damage), Positive Energy Vulnerability, Sterility, +1 CL on Necromancy, Turn Resistance +26, Darkvision 600ft, Low-Light Vision x20, Healed 5hp/level by negative energy, Hostile Environment (Humid), Sand Shape, Shadow Spells, Luminescence, Light Blindness, Divine Senses, Vision x2 in dusty/smoky conditions, Immunity Penetration (Fatigue, Dessication, Negative Energy), Resist Acid 20, Fire 20, Sonic 20, SR 126, DR 40/epic, 15/bludgeoning and epic, Half damage from Vorpal, Phylacteric Transference, Canopic Jars
Saves: Fort +202, Ref +286, Will +227
Skills: See Full Breakdown, Maven.
Feats: Improved Unarmed Strike, Superior Unarmed Strike, Two-Weapon Fighting, Improved Natural Attack (Unarmed Strike), Alertness, Dodge, Mobility, Elusive Target, Corrupted Wild Shape, Lifesense, Life Drain, Improved Energy Drain, Combat Reflexes, Improved Favoured Enemy, Quick Change, Favoured Power Attack, Power Attack, Extended Reach, Martial Study (Inferno Blade), Improved Initiative, Portal Sensitive, Track, Heat Endurance, Weapon Finesse, Sandskimmer, Improved Two-Weapon Fighting, Greater Two-Weapon Fighting, Combat Expertise
Epic Feats: Two-Weapon Mastery, Uncanny Two-Weapon Fighting, Dragon Wild Shape, Colossal Wild Shape, Improved Elemental Wild Shape, Improved Combat Expertise, Weapon Abatement, Improved Finesse, Combat Mastery, Uncanny Power Attack, Greater Power Attack, Sixth Sense, Improved Dodge, Superior Initiative, Blinding Speed, Tenacious Magic, Automatic Quicken Spell, Epic Weapon Focus (Unarmed Strike), Perfect Two-Weapon Fighting, Two-Weapon Rend, Bane of Enemies
Divine Abilities: Anyfeat x2 (Planar Wildshape (Fire), Dark Stalker), Improved Dragon Wildshape, Hybrid Wildshape, Lord of Bone (Dry Lich), (Celerity), Heavenly Mind, Heavenly Soul, Learned Spell Immunity, (Perfect Initiative), Spell Abatement, (Uncanny Dodge), (Heavenly Body), Animus, Perfect Negative Energy Mastery
, Perfect Scouring Mastery (Set to Strikes)
Cosmic Abilities: Lord of the Skull, (Lord of the Skull), (Legendary Charisma), (Legendary Dexterity)
Environment: Hot Deserts
Organisation: Solitary (Unique)
Challenge Rating: 122
Treasure: Crystal Skull, Belt of Magnificence +6, Gloves of Cosmic Dexterity, Galactic Dust (Jar), Cloak of Cosmic Charisma (all with Phylactery)
ECL: 182
All of Polymorpheus's items are stored with his phylactery.
Belt of Magnificence +6: Provides a +6 enhancement bonus to all ability scores
Crystal Skull (Major Artefact)
A skull made of pure diamond, worn over the wearer's head, like a helmet (which always seems to work, regardless of the size of the wearer's head), it provides the wearer with the ability to see dangers that will potentially harm them in the future, granting Perfect Initiative, Celerity, Superior Initiative and Uncanny Dodge. It also transforms any Lich wearing it into a Demilich, although this has no effect on Polymopheus because he's already a Demilich.
Cloak of Cosmic Charisma, Gloves of Cosmic Dexterity, minor artefacts, these provide the wearer with the Legendary Charisma and Legendary Dexterity Cosmic abilities, and a +54 Enhancement bonus to Dexterity and Charisma.
Galactic Dust(Major Artefact)
This seemingly uninteresting jar contains dust harvested from beyond the stars, in intergalactic space. When held, it confers the Cosmic Ability Chimerical, and a +31 enhancement bonus to attack and damage for the user's natural attacks.
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You do? I've been using your rule so far... Not a tough fix, though.
