Quote Originally Posted by Adumbration View Post
1 level dip in Exemplar would suffice. +4 to Truespeak checks, and choose it as your Skill Mastery, and you can now take 10 on it.
I don't think you can take 10 in Truespeak without a special ability like Deceive Item for UMD; it's got the clause "you can't Take 10 in Truespeak ever ever". As such doesn't exist, I don't think there is a way to take 10 in Truespeak without homebrew.