New Defense Idea

All we have seen only def place on the ground...Troop like archers can shoot ground and air...How about new Def

NIGHT HAWK:
HP:300
DPS:5
RANGE:5-10
TARGET:GROUND AND AIR
DAMAGE TYPE: SINGLE TARGET
FAVOURITE TARGET:ANY

This def stay on air ...it shoot balls/ or anything hard downward, but it like mortars...They cant attack near troop...This def can be attacked by troop that target air units....Healers cant heal it as it was flying def...

Thats all....Hope to get positive feedbacks...