Saeviomagy said:OTOH, to have that effect, he has to have a glowing circle of runes around his head, which make it just a little bit difficult to hide, or even keep your location secret when invisible...And sure he can stifle them, but then they stop working, and it takes a standard action to reactivate them again...
Well, many folks have found that you can use sneak attack just fine being a clanging, platemail-clad, smash-in-the-door type. All you need is flank.