A cutting device that can be used, among other things, for efficiently removing items such as extant trees and vegetation by cutting the subterranean root systems in situ with a powered multi-blade system. Among other uses, the cutting device may be implemented and deployed as a powered multi-blade device with cyclic, reciprocating or ellipsoid cutting action that severs root and other comparable matter such as cable in situ, without having to drag same to the surface.