Ah, so they're using either the spell Hide From Dragons or some sort of item that mimics the spell's effect to do their work.  That's alright then.  Given that Janafae and Zekolyn are sharing their senses via the spell Greater One Mind, would he still at least be able to tell what square they're in if he makes it so that others can see them?<br/><br/>Also, and this question is important, are the two Assassin Devils within 20 feet of one another?  And if they are and I were to use an area spell on them, would anyone else get caught in it?