The diamond troop

Diamond troop
500 dark elixir
15 min train time
5 spaces
Damage per second, the same as the damage is being hit with
Hit points 2000, 4000 max
20 speed
this troop will reflect back the damage from one defence, returning the same damage to that defence. If its hit with more than one defence building, then the second building will start destroying the troop. It can only reflect the damage of only one defence. So a few of them will create a diamond formation sending back all damage. This troop will not be able to break walls, and traps will be their weakness, doing four times damage than regular damage.

They will look like warriors made of light blue diamond. If all defences are destroyed and only resourse buildings are left, they will act as wall breakers and destroy themselves trying to finish the base.

Sorry i dont have drawings but it will be just like each body part, legs and arms like big spikes of crystal, and body like 2 spikes put together by their flat parts and a head like diamond upsidedown. They will place they hands together creating a shield to reflect damage back.

Adding a little to the idea, maybe every lvl unlocks a new defence it can reflect.