Prestige classes offer a new form of multiclassing. Unlike the basic classes found in the Player’s Handbook, characters must meet requirements before they can take their first level of a prestige class. The rules for level advancement (see page 58 of the Player’s Handbook) apply to this system, meaning the first step of advancement is always choosing a class. If a character does not meet the requirements for a prestige class before that first step, that character cannot take
the first level of that prestige class.
For example, the requirements to become an assassin are any evil alignment, 8 ranks in Move Silently, 8 ranks in Hide, 4 ranks in Disguise, and the candidate must kill someone for no other reason than to join the assassins. Any rogue can meet the skill requirements at 5th level (see Table 3–2: Experience and Level-Dependent Benefits, page 22 of the Player ’s Handbook, for class skill max ranks). When such a rogue gains enough experience points to reach 6th level, she can take her first level of assassin.
Prestige classes are purely optional and always under the purview of the DM. We encourage you, as the DM, to tightly limit the prestige classes available in your campaign. The example prestige classes are certainly not all encompassing or definitive. They might not even be appropriate for your campaign. The best prestige classes for your campaign are the ones you tailor make yourself.
3RDMG原话，我想我的英语还没有差到连没有XP两个字母都看不懂吧。
