Wraith Phasing Ability

I’ve been struggling to recreate the ability wraith from apex legends has where she phases into a different map layout but can still see the map everyone else is on in realtime. Wraith Phase Ability shown right here. In the gameplay, other players see her movements as a wisp trail that follows her movements, and from her POV you can see outlines of characters that are nearby. As far as I can tell there is a duplicated map that they use specifically for her ability, that might be using niagra creating a camera in the wisp that is left behind to show in wraiths perspective in real-time what she’s running into. I want to try that but I don’t know where to start. Any help would be appreciated