----Part 1----
When we enter the dungeon there are 6 adds sending a channel of blood magic down the pathways of zul farrak
to the center of the room before the stairs, this is to represent them channelling from the beginning of the dungeon to
C'thuns essence held in that room.

You must first take out these adds to have the first boss(Spirit Hunter Gartul) appear.

after you kill the adds Gartul will fly in on a Pterrodax and lands below the rope bridge that hangs up above.

after he lands you will need to attack him to have the fight begin. he will not aggro on his own

He will say
"Leave dis place at once outsiders, dere be no place for your kind here.
The bloodletting of C'thun be the only way."

he then sets his flags to aggressive and starts the fight

after engaging he will set a spirit trap on the first person to attack him.

this  should still be a tank because the debuff from the spirit trap will leach his soul and heal allies for 20% more of  what is leached.

a healer should stay with the trapped tank and heal him as the leach continues.

The boss will go after whoever is next on the threat table.

Once threat is established

The boss will lay down random soul traps around the ground these can be simply moved out of to avoid the effect..
but standing in them will damage the original spirit trapped tank with no additional siphon to group.
so basically don't stand in them.

at 80% hp  he will enter his second phase and will shout "Spirit Riders! Show da outsiders dere place in our world."
Spirit riders will come down on more Pterrodax mounts and land on the bridge up above.
the Riders will then have a 10 second cast that will shoot arrows at the tank and hit that player for 500% of his missing hp each hit.
so it is a good time to top off the tank so they take no additional damage from this.

if the tank survives the spirit riders will take the 10% hp hits from each arrow shot that the tank was topped off through.
once the spirit riders die Sprit Hunter Gartul will take 150% damage of what the spirit riders took in total.
Spirit Hunter Gartul will shout.
"You think ya soo clever!"
at this point the trapped tank is freed and the current person with threat will be trapped instead.
everything repeats from the traps to the riders comming in until the boss is at 65% hp
at this point he will shout.
"Enough' I be done playin des games"
He siphons the soul from everyone causing everyone to enter a spirit realm where the boss does increased damage by 10% and everyone has increased damage, haste and magic resistance by 15%.
The boss will lay down traps call new allies to fight with him. these are ghosts, they will come from the outside of the group and channel a
beam to members if a member does not run the beam over the boss without hitting another member
they and the member they hit will be one shot. if the ghost reaches them before they remove the beam they player will be one shot.
whatever hp they loose heals the boss for 150% of that hp.
a player can also run over a trap to release the beam but it will damage to the player in the spirit trap.
as this is the last phase players can decide weather to kill that player to save the team or not.
but it really depends on if the current tank can tank the whole way because if the current tank dies the other one is freed to fight the boss in this phase.
once the boss gets to 25% hp he kills himself with a sacrificial dagger to empower the blood of C'thun