And the build he'd be talking about is the 3 trap, Ranger Build. Which you can find by googling or it's probably in the Ranger section.
I suggest checking out one of my guides/vids for the build I use. Then I can just explain how to use it. When he drops traps use Hold the line the remove the immob then dodge roll the next 2. Most will try and place them before you move into them though so they all activate, that means you just have to retain the knowledge of where they are.
Flashing blade will remove the combo field (unless he's standing in the middle of the point but then he's easy to hit with banish) Zealot's blade gives you the pressure and stops auto-attacks.