Mouseferatu
Hero
Figure out which core class is most like the PrC, and most likely to take that PrC. Then answer the following questions honestly.
1) Completely leaving roleplaying and flavor questions aside, and thinking only in terms of mechanics, is there any good reason for a member of that core class not to take the PrC?
2) Think of what the core class is best at. Is the PrC better at doing that same thing at the same level?
3) If it is better at doing that thing, is it better in general, or only in specific circumstances or situations?
If the answer to the first question is "no," the class is too powerful, pure and simple.
If the answer to number two is "yes," you may have a problem, depending on the answer to number three. For instance, let's look at a combat-heavy PrC. If it's a better fighter than an actual fighter of the same level, you may have a problem. If it's only better in certain circumstances--when standing on a boat at sea, when using a spiked chain, or the like--you might be okay, so long as those circumstances aren't constant in your setting. If the PrC is better in general, or if the circumstances in which it's better are too common, than it's too powerful and not balanced.
And by the way... By my own personal estimation, a large number of the PrCs that grant spell advancement "as per prior class" every level are overbalanced. But that's just me.
1) Completely leaving roleplaying and flavor questions aside, and thinking only in terms of mechanics, is there any good reason for a member of that core class not to take the PrC?
2) Think of what the core class is best at. Is the PrC better at doing that same thing at the same level?
3) If it is better at doing that thing, is it better in general, or only in specific circumstances or situations?
If the answer to the first question is "no," the class is too powerful, pure and simple.
If the answer to number two is "yes," you may have a problem, depending on the answer to number three. For instance, let's look at a combat-heavy PrC. If it's a better fighter than an actual fighter of the same level, you may have a problem. If it's only better in certain circumstances--when standing on a boat at sea, when using a spiked chain, or the like--you might be okay, so long as those circumstances aren't constant in your setting. If the PrC is better in general, or if the circumstances in which it's better are too common, than it's too powerful and not balanced.
And by the way... By my own personal estimation, a large number of the PrCs that grant spell advancement "as per prior class" every level are overbalanced. But that's just me.
