Whether illusions are involved or not, Dorgath would have felt the effects and the difference once Jekaena used her magic to partially block them. It's certainly unusual and probably unlike anything in Dorgath's past experience. He didn't feel numb or pacified or controlled. Instead, it was like the place was constantly making him feel content, even mildly stimulated. At no time since somehow arriving here did Dorgath forget his quest or lose control of himself. He just found that his attention was always wholly focused on aspects of his environment that would normally be in the background. Even now, it's overwhelming: Jekaena's magic is less of a shield and more like an undercurrent of magic that disrupts your tendency to focus on the Copse. The place is so attention-grabbing at such a deep level that fighting it would seem impossible. Instead, the effect is still here, but there's this kind of mental alarm bell that keeps reminding you, "Hey, you have something important to be doing right now.""So is this an illusion? Or are we actually in this Idyllic Copse?"