I have no idea what that is, but like, a big tank that charges up violently and shoots some sort of big bomb at a medium range? and maybe while it's charging up violently (not reloading, but charging up, that would be cool but not sure how to explain it) it does some damage around it when it fires so it prevents you from grouping tons of them without penalty?
Maybe it would reload and charge up? Also it should probably be stationary while firing, but I don't know.
Anyways it sounds really cool.