Speech Impediment
From NsdWiki
Expoint Bonus: 2 or 3
You suffer from an unfortunate inability to communicate smoothly. While far from mute, you may have a lisp, a stuttering problem, or broken, choppy speech. For three points, you have serious communication problems (If your speech is role-played effectively, people to whom you speak must make Discern checks at a Difficulty of 15 to understand you). Additionally, any spells you try to cast have a 30% chance of failing. Th-th-th-that's all, folks!
