Start the fight by having the main tank pull or by using Misdirection. As soon as the adds come into LoS, get then CC and tanked, Give the tank on the first add you plan to kill a few moments to build agro. then tear into it.
The offtank on Moroes should start to biuld threat with him very early in the fight. you never want someone else to be second on the agro when he Gouges the current tank.
Kill off the adds that aren't CC quickly and start DPS on Moroes. The adds that are CC stay like that until Moroes is dead. Never let them get loose!
Gourge hits the main tank failry early in the fight. the offtank should have built some threat and now be taking Moroes. As soon as the Gouge waers off, the main tank should go back to biulding threat in preparation for the next Gouge. This switching of tanks after Gouge continues thoughtout the entire fight and everyone needs to mind their threat, tking care not to overtake the second position on the threat list.
Eventually Moroes uses Vanish and is gone for a few seconds. When he reappears, someone at random is Garroted. Think about removing it with Stoneform, Iceblock, Divine Shield, or Blessing of Protection, or just heal it away. Eventually you won't be able to remove it and really need to keep some HoTs on anyone afflicted by Garrrote.
His agro does not reset after a Vanish so nothing really changes about the tanking. Keet those adds CC, help offtanks amintain the second agro position by watching your threat, and heal up anyone who is taking damage fromGarrote. the heardest part of the fight is getting the adds down without any problems: as soon as you're wokring on the boss with the remaining adds under control with CC, getting him down shouldn't be much of a problem.

