Background/scene for question:
A character witnesses his wife killed before him. While holding her, he begins screaming her name. With each time he utters her name, the world around him shifts as he uses magic he was previously unaware of.
The world shifts because he is using magic that is not of this world, ripping it from another world to revive his dead wife. The shift is like the difference felt right after an earthquake where nothing feels quite right. There are no physical changes, but you just know something is different. Like a shudder in the air.
(These shudders will slowly affect and change how the world works later in the novel)
This "shudder" is felt strongly every time he screams her name until she is finally revived much to her displeasure.
Now the question:
I am asking how I can show this shift that is happening in the air around him, in this particular scene, in a believable way that makes sense to the reader?
I am hoping other writers may have knowledge of this sort of scene.