Tinker

The Tinker is a human who uses his technical genius to make things explode. Corner him and he'll swing his wrench in defense, but give him some time and he'll assemble a mine with whatever spare parts are lying around.

With his ability to detonate from anywhere on the battlefield the Tinker is excellent at offensively controlling the battlefield. Since different parts of the battlefield confer different advantages, gaining control with the judicious use of mines can ensure victory.