I'm not going through my entire library of WotC (or Pathfinder) books to give you a complete list -- there's just too many options (too many splat books, too many Pathfinder archetypes) for me to spend my time trying to put together a complete list in advance.
General guideline: With rare exception (I've tried to list the known exceptions below), stuff in the PHB, PHBII, DMG and DMG II (for 3.5 PCs) or CRB, APG or UE (for Pathfinder PCs), will probably be approved -- but you still need to ask rather than assume.
The list below does not purport to catch everything I would veto -- just because something is not listed does not mean it is available. Also note that even if I approve something, I reserve the right to request a rebuild if -- after seeing it in play -- I think (based solely upon my own opinion) it is over-powered and/or is unbalancing in the game I am running. Note that last italicized clause -- what may be okay with a GM in another game may not be okay in this game.
Prestige (or other) Classes
- Abjurant Champion
- Champion of Gwynharwyf
- Dervish
- Dragon Disciple
- Dragon Shaman
- Dweomerkeeper
- Eldritch Knight
- Escalation Mage
- Fist of Raziel
- Focused Specialist
- Frenzied Berseker
- Hulking Hurler
- Incantatrix
- Initiate of the Sevenfold Veil
- Lion of Talisid
- Master of Many Forms
- Mystic Theurge
- Nar Demonbinder
- Planar Shepherd
- Psionics
- Radiant Servant of Pelor
- Ruby Knight Vindicator
- Shadowcraft Mage
- Soulknife
- Summoner (Pathfinder -- no planes means no eidolons means no Summoners)
- Truenamer
- True Necromancer
- Ultimate Magus
- Unseen Seer
- Ur-Priest
Feats
- Arcane Thesis
- Monkey Grip
- Sculpt Spell
- Shielded Casting
- Vow of Poverty
- Paragon Surge
Specific Types of Spells from the SRD -- for setting reasons, as explained in the RTJ/Character Creation Thread:
- Any spells involving traveling to/through/communicating with/binding creatures from/to other planes (planar binding; secret chest; contact other plane; plane shift; gate; astral projection; etherealness)
- Any spells involved in bringing someone back from death (resurrection; true resurrection; raise dead, reincaration; soulbind; etc.)
Other specific spells from the SRD: (Note: This also means that any other spell not specifically listed that has the same or substantially similar effect is also banned):
- Baleful Polymorph
- Disjunction
- Limited Wish
- Polymorph
- Polymorph Any Object
- Regenerate
- Miracle
- Wish
Other
- Book of Exalted Deeds
- Book of Vile Darkness
- Libris Mortis
- Book of Erotic Fantasy
- Generally any third-party splat books
- Anything drow-related. They don't exist here.
- Ioun stones
- Mask of Stony Demeanor
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