[@Shoryu Magami]

 Well, as our previous discussion had yielded - exploiting a system of dice for the arena to use globally may be more unrealistic than I thought. I believe I broke it down into percentages for that particular roll, which came out around 70%. If your character is fearless, which is very well possible given his typical encounters with the undead and other terrible beasts perhaps he false into the 30% of those that would be ineffective by his attempt. The good thing about a lot of these checks, it isn't like I can do another intimidation check. "Retries" as they are typically referred to are provided such a negative modifier that it would surely fail. Subsequently, it makes the players adventure even more difficult. But I digress, essentially the target would roll a d20+wisdom modifier+level. It would be different if I had rolled a 23 but with 30% wiggle room you may not be intimidated at all.