What is going on with your brother in real life? I need to compare your dream content with real life and your waking attitudes and beliefs in order to find out what the Dream Director is trying to provide you from your unconscious mind. This is Jungian dream interpretation, in which ALL dreams are good in one way or another, because they are meant to assist you in finding and following your life path of spiritual development. I have no prejudices about native magic systems, but I need to know what you are familiar with because SOME (not all) of what your dream utilizes will come from your own prior familiarity; but som3e may be completely unknown to you--yet discoverable somewhere in the world's folklore or paranormal belief systems.
Is the "wignida" similar to the Canadian-NativePeoples "windigo?" I have a book with windigo stories (may be lost at present.