The longer this fight lasts the harder it will get.
The more blood power the boss gains the harder he will hit.
Ranged should stay spread out 12 yards + to diminish damage from blood nova.
To prevent Saurfang from healing himself too much it is really important that you don’t let anyone die from Mark of the Fallen Champion debuff.
The player affected by this debuff will take damage as if hit by Saurfang. To help with this damage you should disarm Saurfang as he reaches 80% power.
It is equally important that no one gets hit by the adds.
All ranged should immediately switch to the adds when they appear in order to get aggro and start kiting.Melees should not use aoe abilities when the adds have just spawned in order to avoid getting aggro.
The adds are resistant to AOE so just kite and single target them down.
Hunters should lay down a path of frost traps.