So, I cant find any info on something inside the class dc rating. It is defined as 10+proficiency bonus+ key abilility modifier. I understand what key ability modifier is, but not sure what the proficiency bonus is ( other than the book stating it is usually 3 at first level). I am guessing it is level + trained at first , but trained in what as the book infers that sometimes it can be something other than 3 at first level. Also when do it go up in proficiency?? What did I miss??
