The Second Boss
Strategy
Sartura begins the fight alongside three elites, who should be killed straightaway before you turn to the boss. If you have four good tanks (one for the boss and each elite), this fight will be a cinch! Sartura will use Knockback to launch her target across the room, so you should be sure to position yourself with your back to a wall. She will also Whirlwind, making your stuns have no effect, unlike the rest of the fight, doing all she can to wipe your raid.
To counter this attack, your tank can use Taunt, followed by Mocking Blow, and then Taunt again to aggro the boss. In addition, once the three elites are dead, position your tanks around the boss in a square formation (or a triangle if you only have 3 tanks) and have them rotate between using Taunt to prevent Sartura from resetting threat for 5 seconds and killing random members of your raid.