> Okay so my thing needs a nerf... 
> 
> Also limited by line of sight?
> 
> Or a total negation limit of 2 
> Which is then weakened by more of them so if all of them are in one space it only negates a tiny portion of their power instead of all 
> 
> 
> 

Line of sight _could_ work, but it still seems a little OP. I'm entirely fine with your ability evolving over the course of the story (which I somewhat expect), so perhaps to begin with, "negates a user's power in a line of sight for a limited amount of time"? You can pick the time limit, as long as it's not too long.

How does that sound?