"Entering the Fade in the flesh, you mean. Mortals enter the Fade in their dreams every night, though only mages are lucid dreamers. Entering it via those means is relatively harmless. But the magisters of old entered via mass-blood sacrifice, and blood magic is already reviled in Thedas, for good reason."

Inessa looks as though she could rant about blood magic all day, but that's getting off track. "There is a difference from passing through the Veil and tearing it asunder. Doing the latter can cause irreparable harm; the world of the Fade and the physical world aren't meant to mix in this manner. Even in places where the Veil is merely thin, much harm can come in a place where spirits -and demons- can freely interact with the mortal world."