moritheil said:
Take a look at PrCs. If you lose access to them, you lose access to all the benefits of the PrC, including meeting requirements for feats.
An interesting thought. Page 16 of Complete Warrior (I'm using it because I happen to have it with me) states:
Meeting Class Requirements:It's possible for a character to take levels in a prestige class and later be in a position where the character no longer qualifies to be a member of a class. An alignment change, levels lost because of character death, or the loss of a magic item that granted an important ability are examples of events that can make a character ineligible to advance further in a prestige class.
If a character no longer meets the requirements for a prestige class, he or she loses the benefit of any class features or other special abilities granted by the class. The character retains Hit Dice gained from advancing in the class as well as any improvements to base attack bonus and base save bonuses that the class provided.
Unlike feats, prestige classes often have feat prerequissites, but no direct minimum ability score requirements, except insofar as some feats have minimum ability scores as prerequisites. However, if we take the interpretation that if you no longer meet the prerequisites for a feat, you cannot use that feat as a prerequisite for other abilities, you have the following situations (again, PrC examples are taken from Complete Warrior because I have the book with me):
1. A bear warrior (prerequisite: Power Attack) whose Strength is reduced to less than 12 or less (due to, say, a -12 Strength penalty from an
empowered ray of enfeeblement) can no longer maintain his bear form and loses his scent ability (if he has it).
2. A bladesinger (prerequisites: Combat Expertise, Dodge) whose Intelligence or Dexterity is reuced to 12 or less loses access to one or more arcane spellcasting levels.
3. A darkwood stalker (prerequiste: Dodge) whose Dexterity is reduced to 12 or less loses access to what are effectively favored enemy bonuses against orcs.
4. A drunken master (prerequiste: Dodge) whose Dexterity is reduced to 12 or less loses his ability to drink like a demon and use improvised weapons.
5. One of the best ways to bring down a frenzied berserker (prerequisite: Power Attack) is to attack her Strength, because she loses her frenzy and deathless frenzy abilities when her Strenth drops to 12 or less.
6. A kensai (prerequiste: Combat Expertise) whose Intelligence is reduced to 12 or below loses all the abilities of his signature weapon.
7. From the core rules, a blackguard (prerequisite: Power Attack) whose Strength is reduced to 12 or below loses his spells, his ability to sneak attack, his ability to smite good, the services of his fiendish servant, his bonus to saves from dark blessing, his ability to command undead, and his aura of despair.
Of course, there is nothing wrong with playing the game with the above interpretation, if you like the results. I happen to find that it produces results I do not like, so I will interpret it differently in the games I run. And, if I'm playing in a game with the above interpretation, I will pack a
maximized, empowered ray of enfeeblement just in case I meet a blackguard.