I was wondering if anyone could tell me where I can find rules or something to help me create prestige classes, monsters, new races, modules, etc. that are game balanced for d20, have the right ECL or CR, or fair prerequisites. It's really hard figuring this out, so if there is anything out there that gives a format, formula, or template, I would really liked to be pointed in that direction.
Thanks!
Cigano
Thanks!
Cigano