How to create a pulsating distortion effect from a source

I wanted to create the effect of a magical object pulsating, it would be easy if the object was close, but I want the effect to be visible throught the entire level. Would it be at all? I would try and use an emitter like This, but it would look very bad when it clips with walls and objects. Similar to this Astertes scene but with more “force”/distortion effect.

Try a post process, like this