Phase 1: The Pull

It's very important to engage Auriaya and the Sanctum Sentries with the entire raid out of line of sight, to avoid Savage Pounce. There are a number of ways to pull, including death and decay or totems (set down before she patrol's in) and pet suicides. The raid needs to stay out of line of sight until the four adds are in melee range, at which point the main tank picks up Auriaya and the two off tanks pick up two Sanctum Sentries each.

Phase 2: The Fight

The two off tanks should drag the adds to opposite sides of the platform, at least ten yards apart, to minimize the damage increase they gain from Strength of the Pack. The entire raid (apart from melee) needs to stand in front of Auriaya immediately and kill the Sanctum Sentries. After all four adds are down, dps can switch to Auriaya until the first Feral Defender spawns, at which point one of the off tanks should pick it up and position it in the raid. All dps need to switch to the Defender, taking it down to approximately 15% hp. When it reaches 15% health, the tank should drag the Defender off to the side (and let ranged finish it off) to avoid dropping Seeping Feral Essence (void zone) on top of the raid. Having a death knight Death Grip the Defender out of the raid at around 10% is another good option for positioning the void zones.

The only other time dps switch off of Auriaya is to Aoe down the Swarming Guardians, which should die within seconds.

Auriaya will cast Terrifying screech and Sonic Screech throughout the fight. Tremor totems should be down at all times, and after Terrifying Screech the raid needs to immediately move back into position in front of the boss. Auriaya should be repositioned well away from void zones throughout the fight to reduce the chances of someone being feared into one. Sonic Screech is easily healable with a few seconds and a decent balance of Aoe healers in the raid.