"A fairly major problem is that we do not have any experience with Keltham playing games against us knowingly and with a +4 intelligence headband.  Suppose he can only trade with Evil, and restricts it to Lawful Evil so it doesn't give us too much away.  Perhaps he only dares trade with the Lawful.  Perhaps he's going to screw over Chaotic Neutral in particular.  Perhaps it's a complete red herring.  Perhaps he's rolled a die to decide how many layers to put into his deception so that we can't predict the exact number, it seems like the sort of thing dath ilan would do."

"A fairly major problem is that we do not have any experience with Keltham playing games against us knowingly and with a +4 intelligence headband.  Suppose he can only trade with Evil, and restricts it to Lawful Evil so it doesn't give too much away.  Perhaps he only dares trade with the Lawful.  Perhaps he's going to screw over Chaotic Neutral in particular.  Perhaps it's a complete red herring.  Perhaps he's rolled a die to decide how many layers to put into his deception so that we can't predict the exact number, it seems like the sort of thing dath ilan would do."

"We do not have any experience with Keltham playing games against us knowingly and with a +4 intelligence headband.  Suppose he can only trade with Evil, and restricts it to Lawful Evil so it doesn't give too much away.  Perhaps he only dares trade with the Lawful.  Perhaps he's going to screw over Chaotic Neutral in particular.  Perhaps it's a complete red herring.  Perhaps he's rolled a die to decide how many layers to put into his deception so that we can't predict the exact number, it seems like the sort of thing dath ilan would do."