Gundark
Explorer
From the SRD
"Nonassociated Class Levels
If you add a class level that doesn’t directly play to a creature’s strength the class level is considered nonassociated, and things get a little more complicated. Adding a nonassociated class level to a monster increases its CR by ½ per level until one of its nonassociated class levels equals its original Hit Dice. At that point, each additional level of the same class or a similar one is considered associated and increases the monster’s CR by 1. "
In my Age of Worms campaign the party will be facing a Mind Flayer with 7 levels of sorcerer making it a CR 10 (11 with underlings). I know my group might gripe about this but hey life is tough . I'm wondering who else uses this rule.
"Nonassociated Class Levels
If you add a class level that doesn’t directly play to a creature’s strength the class level is considered nonassociated, and things get a little more complicated. Adding a nonassociated class level to a monster increases its CR by ½ per level until one of its nonassociated class levels equals its original Hit Dice. At that point, each additional level of the same class or a similar one is considered associated and increases the monster’s CR by 1. "
In my Age of Worms campaign the party will be facing a Mind Flayer with 7 levels of sorcerer making it a CR 10 (11 with underlings). I know my group might gripe about this but hey life is tough . I'm wondering who else uses this rule.