Obsidian Sentinel

Uldaman

Stonekeeper halls

Take the Obsidian Sentinel side chamber before continuing to Ancient Stone Keeper. Finish the Sentinel's shards before leaving its room, then use the Stone Keeper's chamber as moving space when sand storms appear.

Obsidian Sentinel

Elite Mechanical

Obsidian Sentinel becomes less dangerous itself as it splinters, but the accumulating Obsidian Shards make unattended adds the main threat.

Abilities

  • Summon Obsidian Shard

    Collect each summoned Obsidian Shard and defeat it before returning to the Sentinel; leaving shards on the healer reverses the benefit of weakening the boss.

  • Splintered Obsidian

    Splintered Obsidian reduces the Sentinel's physical damage. Keep removing shards instead of treating the weakened boss as permission to ignore them.

Tank
Gather the Obsidian Shards onto the Sentinel as they appear so damage can reach them without sending loose attackers through the healer's position.
Healer
Watch the player collecting the shards. The Sentinel's weakening melee does not reduce the separate damage from shards that have been left alive.
Damage
Switch to new Obsidian Shards before resuming the Sentinel. Finish the surviving shards before the group leaves this side chamber.