To find this you go to Vashj'ir (from SW), Abyssal Depths (western half), and into the Abyssal Breach (swirly thing in the middle) for the instance hub.

Lady Naz'jar

• Vortex - Summons a circle on the ground that explodes for 25K damage throwing people up in the air
• Static Shock - Single target attack to tank, 2 sec cast
• Fungal Spores - 10K damage per second disease, cleansable, dodgable.
• Water Spout - At 66% and 33%, banishes herself and summons adds, 2 Tempest Sea Witches (100K hp) and a Naga Honor Guard (200K hp)

Notes:

• Don't stand on Vortex
• Kill adds to unbanish her
• Unlock the defense mechanism to summon...

Commander Ulthok

• Dark Fissure - Slams ground in front doing high damage and leaving a dark circle that deals 10K damage per second to anyone standing in it, 2 second cast.
• Squeeze - Grabs random party member, deals 5K damage per second for 4 seconds
• Enrage - Increases damage done by 100% for 8 seconds

Notes:

• Avoid the fissures
• Keep everyone sufficiently topped off in case of Squeeze
• Can do some kiting to avoid damage

Erunak Stonespeaker

• Lava Bolt - 20K fire damage to target
• Magma Splash - 2K fire damage per second for 4 seconds, frontal cone attack

Mindbender Ghursha

• Enslave - MC's the player with highest threat, broken when player reaches below 50% hp
• Mind Flay - 2000 damage to all players

Notes:

• Erunak starts off MC'd so you first bring him to 50% hp
• Then the Mindbender appears for you to kill
• DPS whoever's MC'd to release them

Ozumat

This is a save Neptulon from a crap load of adds fight.

Phase 1:

• Deep Murloc Invader - AoE fodder
• Vicious Mindlasher - Shadowbolts and interrupts, kill ASAP
• Unyielding Behemoth - Shadow Blasts (20K aoe around them w/ knockback) and frontal cone attack, Tank grab and kite them

Phase 2:

• Unyielding Behemoth - Same deal
• Blight Beast - Aura of Dread (2K shadow damage and increases shadow damage taken by 50%, stacks), tank taunt kites them too
• Faceless Sapper - 3 spawns, kill ASAP, they do a DoT that kills Neptulon
• Ozumat - Blight of Ozumat, leaves a dark area on ground doing 300 damage per second DoT, stacks

Phase 3:

• Ozumat - Just him, kill.

Notes:

• 5 minute enrage, 3 phase fight
• Phase 1 - On some timer, dps focus on Mindlashers, aoe Murlocs, tank kites Behemoth
• Phase 2 - 3 Faceless Sappers, kill ASAP to end phase.  Tank kites Behemoth and Blight Beasts.   Also avoid void zones (Blight).
• Phase 3 - Neptulon is free, buffs you all up (+500% hp, damage, healing) to kill the remaining adds and Ozumat.