Sarthurion tactics

[Dragonette]

Sartharion <The Onyx Guardian> is a black dragon boss located in the Obsidian Sanctum of the Chamber of Aspects.

This part of the Obsidian Sanctum contains 4 mobs of interest. These are Sartharion (the raid boss himself) and 3 drakes, Vesperon, Shadron and Tenebron. Each has their own form of adds depending on how you engage. The drake mobs are known as 'Disciple of ...' respectively.





Twilight DrakesVesperon
Has aura: Power of Vesperon: Maximum health decreased by 25%.
Shadron
Has aura: Power of Shadron: Fire damage taken increased by 100%.
Tenebron
Has aura: Power of Tenebron: Shadow damage taken increased by 100%
Each drake can be taken down without engaging Sartharion. The achievements require leaving them up. If you do down them, they each give a Emblem of Heroism/Emblem of Valor, but no loot.




Vesperon and Shadron - Each drake fight is a typical spank and tank, but after ?s the drake will open a portal. One healer, one off tank, and all dps need to take the portal, leaving only the main tank and his healer behind. Much like phased content, you'll be in the same place (totems still exist where you left them), but instead of seeing the drake, you'll fight a disciple of X, depending on which drake it is. They have a shadow aura that reduces damage taken by 25%, but periodically pulses shadow damage to you.

The drake will take significantly less damage and deal 50% more damage until the disciple is killed, so it is imperative to kill the disciple as quickly as possible. Once that disciple is downed, all players in the alternate realm immediately return to the real world. The drake will continue to summon portals and disciples that must be killed until the drake dies.

TenebronTenebron is similar to the first two drakes, except that in the alternate realm, instead of a disciple, you will encounter several eggs. The portal group will need to kill as many eggs as possible before reaching a time limit, at which point the eggs hatch, and everyone is reverted to the real world. Any unkilled eggs spawn whelps, which must be tanked and killed as quickly as possible, so that the DPS can return to the drake before the next portal appears.

Sartharion - Has 7,670,000 HP (25 man), 2,510,100 HP (10 man)
Has Cleave. ? damage.
Has Tail Whip. ? damage and knockback.
Has Frontal Breath. Fire attack. did ~15-18k with Shadron's debuff up unresisted.
His immediate area is surrounded by a small moat of lava. The east/west sides of this lava spawn lava waves by Sartharion during his emotes every 30 seconds. See layout/positioning images below for details.

Strategy
Obsidian Sanctum Layout
GREEN is the instance portal
PURPLE are the 3 drakes up in the hills (Tenebron on the west, Vesperon on the south, Shadron on the north)
Light RED is the lava border immediately surrounding Sartharion
YELLOW is Sartharion's position before the pull

Sartharion Initial Positioning
Positioning for wave originating from the left
Positioning for wave originating from the rightPositioning:
YELLOW is Sartharion's position after being rotated to face east
GREEN is the MT location
PURPLE is the melee
BLUE is the ranged/healing camp

Lava Waves
At certain intervals, a raid warning will appear saying, "The lava surrounding Sartharion churns!" Lava waves will then spawn that originate from the left or right of the encounter area. These waves place a minor DoT on any players caught in them, so players should move to the gaps between them. The location of the gaps is predictable depending on the side that the waves originate from, as shown in the illustrations. They are huge, obvious, and slow-moving, however, so players should have no trouble watching for them and moving out of their way.

When the wave originates from the left, the tank will need to rotate Satharion away from the group to avoid the wave, as shown. When the wave originates from the right, the tank should not have to move. At all times players should avoid Satharion's cleave, breath, and tail swipe.

It is possible to heal the tank through the Lava Strikes and resulting DoT, if your group desires so.

Sartharion's Fire elemental Adds
Health: ?? (25), ~26,000 (10)
These adds are summoned every ?s in groups of 2-4 to be offtanked. After ? these adds will ? to deal 400% more damage, so ~800 becomes 4k, modified by Shadron's aura. DPS will have to drop these as priority after they spawn and are picked up by the OT. Adds should be moved out of the path of the Lava Strikes, as the waves will cause them to immediately grow in size and strength.

The major drake of issue is Shadron since everything in the encounter is fire damage. Vesperon is less an issue as your raid is better geared. First time groups like ours will take down all 3 drakes, making the encounter a tank and spank, minor add control and minor movement to avoid waves, like Heigan. Subsequent visits will leave Tenebron/Vesperon up.

If you leave the drakes alone, shortly after engaging Sartharion, the remaining drakes will come to Sartharion's aid and thus their auras come into play. Tenebron's aura will only impact the raid when they take the portal to deal with those disciples. Shadron's aura will be in play the rest of the time and Vesperon's will affect both (verify?).

The apparent strategy for leaving all 3 drakes in play with Sartharion requires having a group assigned to deal with the fire adds from Sartharion, as well as a subgroup to deal with the portals and their adds. We didn't test with all 3 up, so unsure if multiple drake portals can exist, but you can be caught with fire adds and portal disciples at the same time making for an interesting juggling match.

At 10% he goes into a sort of soft enrage, summoning what looks like 5-10 of the elemental adds.