Step 1: Group up enemies with your preferred method of choice
Step 2: Swing big stick
Step 3: G R O F I T

Works best with Naramon so you can maintain the combo counter (obviously)
I personally have mine modded for Corrosive for Grineer but you can easily change elemental types.
You can easily replace the riven with [Primed Reach] or some other mod.

Exodia Force tends to make this build output a lot more damage if you have an ability like Larva or Ensnare on your frame, but if you don't, [Hunt] is great for pulling entire rooms into the blender