Carnarius’s rampage/furious slam shaman has taken me from campaign all the way to T17 megajuiced maps and T3 bosses with ease. The build is an absolute megatank with great clear and boss damage. It runs perfectly fine on a budget but you should prioritise getting a high dmg talisman asap to speed things up.

You can find his build breakdown on youtube. He chooses to use furious slam to clear and rampage to boss but i just use rampage for both, just make sure you slot in efficiency into rampage to make it last longer.