Easier and probably more reliable too. Especially if he did something along the lines of what Moghendien did to Liandrin. Perhaps even made him believe the markings were real ... "All Couladin could see where the mans eyes, then he said "BELIEVE" Couladin knew he was in fact the Car'a'carn" ... even if Couladin knew he was a fraud it could have been a command as simple as "Oppose al'Thor" or "Rebel" ... you get the point.

IMO it's very likely that Lanfear was involved with setting this into motion, otherwise she would never have trusted Asmodean to follow-through with his side of the bargain.

I always wonder if Asmodean and Lanfear didn't have some kind of loose alliance in the AoL. It would suit them both, she'd like a powerful, but weak willed mantoy and he'd likely need the powerful ally to have survived.

Makes you wonder how many of the AoL FS were given new names. I've always thought it unlikely that every AS who turned got a new name... seems to me that only the top ones (perhaps the 29 that were allowed access to the TP) where ever so famous as to have names assigned to them by the general populace.