Quote Originally Posted by Saintheart View Post
Cutting across the issue here, but I'd thought concealment chance cuts across natural 20, doesn't it? If not, there's probably a few disgruntled players I need to talk to...
Miss chance provided by concealment should still work on Natural 20s. You're supposed to roll miss chance after you determine if you've achieved a high enough roll to hit that appropriate AC. A natural 20 just means that roll succeeded.