Gun item that increases damage to aerial targets

[Vestillion]

I want a 1600 item that goes like this:
+5% spirit res
+10% reload speed
Passive: increases weapon damage by 25% on targets that are off the ground.

I think jumping is too strong in this game, and I want something to punish overly movement-happy players/characters.

 

[iLovePetscop]

I like this!