Rift Boss 1: Barz

Preparation
First, clear of the trash groups in the room. They are similar to the other groups in the first part of the instance: The Troll-Keeper/Troll combo and the Slave-Master/Slave-Worker combo.

5 Hope Token per Fellowship (15 min is sufficient for each). Determine a back up for each Fellowship to clear death-dread if needed.

Damage Types
Barz: Anything except fire or light
Troll-Keeper (orc): Light
Troll: Fire or light

For kiting Barz you'll need:

1 Off-tank. Keep the Minstrel assigned to the kiter near the base of the stairs between the tank and the main group so they can heal both if needed.

Optional:
A Lore-master applying Sticky Tar in Barz's path is useful.
A hunter can be assigned to slow Barz with Quickshot (in Strength Stance) and Barbed Arrow and apply DPS during waves.

Battle
Start out the fight with minor DPS, having the Off-tank getting Barz's aggro. The Main Tank (Guardian) conserves his power for the later adds.

Adds
The adds on Barz will spawn from the "mine entrances" in the wall to the left and right side of Barz. Each wave is scripted to occur when Barz's morale goes below a specific amount. To let you know they are incoming, Barz will yell something like "Come to me slaves!". The adds will consist of the usual Troll-Keeper or Slave-Master groups. Have the Guardian tank the Workers and turn them away from the casters since they have a cleave that interrupts casting. Keep slaves or slave-masters mezzed to prevent their heals and buffs until the lesser adds are cleaned up.

Wave 1 (95k morale) - Troll-keeper and Cave-troll from left
Wave 2 (75k morale) - Hillmen Slave and four Hillmen Workers from right
Wave 3 (45k morale) - Slave-master, Hillmen Slave, four Hillmen Workers, and pale-folk from the left

Kiting
Have the Off-tank run around in a wide circle with Barz, up the stairs of the pavilion-like stone building to the right of Barz's start point. Sticky Tar lying at some point on the Off-tanks route to slow him down helps. The hunter can be used to slow him down and deal minor DPS. Make sure you don't pull Barz near your other team members, in case he starts Gnawing Bones.

During the fight, Barz will shout out one of two abilities:

"No power is stronger than Barz!" - He drains approx. 500 Power from all players close to him. He will charge at a random player for about 10 seconds before returning to the tank. In this instance everyone must ignore Barz completely, he will return to the tank. Step away from him in case he Gnaws Bones.

"I'll gnaw your bones!" - Pounds his hammers onto the ground, dealing around 1,500 damage per second in a 10-meter radius to all players around him. You'll have about 2 seconds to get out of range or anyone not wearing Heavy Armour will be in real risk of defeat. A critical hit from this attack will easily do over 2,500 damage on medium and light armour wearers.

Important Point to Remember - Barz can sometimes do the "I'll gnaw your bones!" immediately after "No power is stronger than Barz!" without shouting. Only the Floating text will appear and the strange nimbus effect around him. Watch for this as it can cause a wipe.

Defeating Zurm Before Barz
If you take down Zurm first and Barz second, Barz gets an additional special ability. Periodically throughout the fight, he will say "I'll bring the cavern down on you!" which causes a few "cave-ins" to occur. Each cave-in has an approximate 5 meter radius and does damage to all players standing in it. Before it happens, a dark area on the ground will be visible and it is possible to move out of the cave-in before the rocks start falling.

Loot
Barz always drops [Near Perfect Sapphire], traded in for the boots of the Rift set.

Occasionally, he will drop:
[Threkrand]
[Thick Gold Ring]