The "Avenger" Champion build vs Saarath, Gurd Harofsen and the Ravager - Dragon Age Inquisition 

Dragon Age Inquisition Story-Build: "We will train today. We will train hard. We will train in the mud and the rain surrounded by a horde of undead. That is how we Avengers do it."
The "Avenger" Champion - or "How to turn your Weapon and Shield warrior into a damager!"
A bit more risky than the regular tank Champion, but its damage rivals any other warrior specialization! Even Reavers!
I consider this build to be the ultimate "boss killer" warrior!