Electro-marine Praetorian

It's an amphibious mob. Although he is neutral, he will defend when attacked.
Praetorian has 2 attacks - melee and ranged. He will use his melee attack if his target is near, and will
use a ranged attack if it is far.
He is also able to deactivate some redstone-aware blocks using electro-magnetic pulse in a 15 block range.