Propugnators are a type of defensive djinn wish that sets a protective barrier around an enclosed area. It deters outsiders from going too close too the protected area. However, unlike a physical barrier, it only affects the minds of those who approach the barrier and therefore does not provide physical cover such as against rain. Nimrod Godwin cast a propugnator around their encampment in Brazil to prevent further attacks during the night. A djinn is unable to use their power inside the barrier of a propugnator. The barrier doesn't last if the djinn who cast it is not inside, even if he/she is substantiated.