New dark troop: HEAD HURLER
The head hurler would look like a golem but be the size of a goblin; also the same speed as a goblin. The head hurler rams himself into defenses. You set a couple down and they all run to a defense head first. He'd be colored darkish gray made of clumps of rock. His head would be darker, I think this would serve better as a normal troop, but add replies to make it more of a dark troop!
Damage: 70
Speed: 45
HP: 110
As the Head Hurler gets leveled up he gets larger. His head starts growing spikes.
Max level for Head Hurler would be Level 3 and the stats would be
Damage: 105
Speed: 65
HP: 125