Almost pure damage build, Phoenix Ashes to cover up oops moments but largely going to require a lot of movement to avoid damage while hitting the boss.Focused entirely on maximizing Vengeance, it becomes the only required skill. You can sub in other skills just fine (you'll do slightly more or less damage) including Explosive Arrow if you've got a party member who can group monsters up for non-raids as the consistency of EA is better than Ult'ing Crossbow Shot periodically.
Mostly for my own personal reference while I'm still working to memorize legendary and set names. PvE build focused on damage with a lot of flexibility on what gems and skills you can use as everything is funneled into Vengeance. I'm a F2P player so I needed a good build that's not going to break the bank or be unrealistic to obtain. Phoenix Ashes and Blood-Soaked Jade are nice but there are other good options.
Good Enough replacement gems:
Pain of Subjugation
Power and Command