As I understood this spell doesnt worth much (not even sure what it does exactly, but that's me),

Why not making it add the caster + 1/two caster lvls to search skill for 1 round?

(or something alike)

I suggested this once in the past, and while it had significant support it seems that the conclusion was that it would overpower the arcane and diviner classes.

Even a 1 per X (something like 3-4) and for one turn?

Well, I think I read that topic, so I wont start it again :P

Thanks for reminding me