It gets insane with a couple more pieces. My current monk’s profile..
As you can see I use Wave of Light to activate the 3000%, and I have other items that affect Wave of Light, including reducing its cost, casting it where I click, and slowing enemies and additional damage. Plus the belt that generates sweeping wind stacks, and a fist weapon that increases available stacks by 6. Basically I just run around and click Wave of Light every second or so whenever enemies appear onscreen and they just melt.