I'm currently looking at an ACF which included a nice ability which triggers on a charge attack (target must make a Will save or be dazed). However, the DC is equal to 10+Class Level. It wouldn't be problematic if it were, say, 10+1/2 class Level+Attribute Modifier - like most abilities - but it isn't. So, unless I want to take all 20 levels of the class, the DC goes from 50/50 to Natural 1 pretty fast.
What are ways to boost the DC of special attacks?