Venthyr Covenant Dungeon Buff in Halls of Atonement

Throughout the Halls of Atonement, Loyal Stoneborn trash is present in the dungeon. These Loyal Stoneborn have the Loyal Stoneborn buff and start off as hostile enemies.

Any player that is part of the Venthyr Covenant will get the extra action button Loyal Stoneborn when they approach a Loyal Stoneborn. Casting this on the Loyal Stoneborn will turn it friendly for 30 seconds, causing it to fight with the party. After 30 seconds, the Loyal Stoneborn will fly off -- you don't actually need to kill this mob with a Venthyr in your group and it deals lots of damage!

Casting Loyal Stoneborn on the Loyal Stoneborn also grants a 30 second buff Stoneborn Boon that grants 10% Damage Reduction per stack, a helpful bonus! 

Quick Boss Guide

• Halkias: Stay in the boss’ red circle but avoid Glass Shards on the ground. Tanks need to move the boss to give players safe places to stand. Avoid red beams.

• Echelon: Stay out of red pools on the ground. Interrupt the adds, group them as much as possible, and kill them. If you get a red arrow over your head, run over the adds’ corpses so the boss will jump on them and they can’t resurrect.

• High Adjudicator Aleez: Interrupt the boss whenever possible and stay out of red pools on the ground. If you get fixated by an add, kite it to one of the jars in the corners of the room.

• Lord Chamberlain: Stay out of his frontal cone. When you see a red line between the boss and a statue, stay out of the direction the statue is facing. At 70% and 40%, dodge statues when they’re pulled toward him, and then absorb red beams between them and the boss.

You can find a full up to date guide on Wowhead: https://www.wowhead.com/guides/halls-of-atonement-shadowlands-dungeon-strategy-guide