New dark troop tunneler

The TUNNELER is a de troop who tunnels a little way under the enemies defences and then comes up and attacks the nearest building
Other troops may follow him but wi move slower in the tunnel and some troops (pekkA for example) can't fit through.here is the stats

Dps 20
Hp 780
Speed 20above land 17below land
Cost 120de housing space 6
Time 1.75 hours
When he is underground the TUNNELER can't be hit by defences but the tunnel entrances can, if they get destroyed then the TUNNELER starts to take 10damage a second until he resurfaces .
He is a troop that is hired somehow so you can only have 1 of them his tunnelling is controlled by the player using a ability like the heroes but the ability can be used multiple times