Fight club will be a weekly guide featuring a new instance each Monday. This week is Obsidian Sanctum 10, though there isn't much difference between 10 and 25. Just more people. Let's get started!

Shadron

Shadron has a few abilities, nothing too tough though. He does an ability called Shadow Fissure which deals massive damage to anyone standing in it, it's a large blue circle under your feet so if you see it get the heck out of there! He also does Shadow Breath which is a frontal AoE ability. Only the tank should be standing in front of him. Every 60 seconds Shadron will open a Twilight Portal, all members of the raid except the tank and 1 healer should go through this. Inside you'll find an add, once it's dead you will be sent back to the regular fight to continue killing Shadron.

Tenebron

Tenebron also has Shadow Fissure, and Twilight Breath so watch out for those. In this fight, she will hatch her eggs every 60 seconds. When this happens, have a tank pick them all up quickly and everyone else AoE them down. It's a pretty easy fight, and the Twilight Portal can be ignored.

Vesperon

Once again, Vesperon also has Shadow Fissure and Twilight breath. When he opens his Twilight Portal he will also put a buff on himself called Twilight Torment. Everyone but the tank and a healer should go through the portal, at this time the tank should stop attacking Vesperon. Once inside the portal kill the add, you're then transported back out to continue the fight.

Sartharion

Sartharion is the main boss of Obsidian Sanctum and the only one that drops loot. You'll start the fight by having the tank run in, aggro Sartharion, and then pull him toward the front left corner, but not all the way. Have a good few yards between you and the corner.

Now Sartharion is extremely easy as long as everyone knows what's going on. Of course he is a dragon, which means he has Cleave, Tail Lash,and Flame Breath so everyone but the tank should be beside him. The ability that you need to watch out for is Flame Wave. What this does is sends a giant tidal wave of lava from either the left or right side of the island. The wave has a large opening in it and is very easy to avoid, the reason your tank brought Sartharion toward the left corner is because when the wave comes from the left that's where the opening will be. If it comes from the right it will be on the far end of the island. My guild always called out 'Down' for left wave, and 'Up' for right wave.

Sartharion also sends out adds called Lava Blazes An off-tank should pick these up right away, and most DPS (or just a few people that can do a descent AoE) should immediately switch to these adds, because if they are it by a Flame Wave they become enraged, which is bad. After they're gone, it's back to Sartharion. All of this will happen repeatedly throughout the fight and that's all there is too it. Not many things happening and they happen slow enough to easily deal with them all.