[Defensive Building Idea] Target Dummy / Scarecrow

I want to suggest a new defensive building that is 1 tile in size.

It is a hidden trap that triggers in proximity of an enemy unit. It has no effect other than being a defensive target and does no damage; has 10 hp.

I also want it to have air or ground option like the skellies.

Image would be a stuffed goblin made of a gunny sack, straw for hands and feet, button eyes, etc.

Air image would be a stuffed goblins with balloons on its shoulders.

What do you guys think?

This idea came about while I was designing bases against current war meta; I feel this tool would help further base design meta with minimal impact towards offense/defense balancing.

This ground version is meant increase effectiveness of double giant bomb pathing and single bomb pathing and be a nuisance to mass golems; and the air version is meant to provide a nuisance to lavahound and balloon pathing.