Location: Sitha's Tomb - 2nd Floor
When you break the Soul Keeper you have around 1.5 seconds to run away (toward the farthest wall along your path) and a mini boss and traps appear.
Be careful of the moving balls of doom that surround the now present mini boss and his minions.
Have the crasher or priest take out the traps OR have a gunner snipe the mini boss to pull him toward you.
The party should be against one wall and the tank should face the boss away from the party for optimal damage and minimum casualties.
Defeat this boss and the wall along your path falls to allow you to continue on your way to Sitha and your Legendary gear.