I can't believe I'm just noticing this now. Anyway disguise kits only add a +2 to the check, not +10, which Aeriyon would lose anyway for trying to disguise as a race he wasn't which is a -2. On top of that, Ilmlim would get bonuses to see through the disguise. Even if Aeriyon was actually a traitor, they worked briefly together making them associates giving him a +6 bonus on his spot.<br/><br/>So, Aeriyon's actual disguise check is 20, and Ilmlim's opposed check is . Since with the blindsight he doesn't need to make spot checks to see things he has line effect to. Once Aeriyon leaves out the hidden door, Ilmlim would see him and through the disguise. (http://elliquiy.com/forums/dicebot.php?r=409701d20a6 Result: 22[/url)