Don't be fooled by the one death to the corrupted owl. you do a lot of damage, I just never landed any Absolutions until the end. The Owl's erratic movements make it hard to hit em. Hunter is even worse but he isn't in the video. The rest of em' corrupted Druids are easier to deal with.
Singularity Relic isn't doing that much compared to Absolution but it's great passive damage while Absolution is on cooldown. No reason not to use it. You don't really need the relic to farm Scosglen but it does increase your clear rate. Solid relic.
https://tsw.vn.cz/char/NECROMANCERSUXS