No Fly Zone

You're given a Bone Gryphon which comes with four abilities (listed in the order they are located on the action bar):

1) Frost Breath - instant primary spam attack; no cooldown
2) Plague Strike - deals a small amount of direct damage and applies a DoT; has a 12 second cooldown
3) Bone Armor - instantly gives your gryphon four "bones" that absorb damage (basically a shield); has a 20 second cooldown
4) Speed Burst - doubles your flight speed for 8 seconds; has a 1 minute cooldown

Head over to Onslaught Harbor to the west of Death's Rise and find a safe spot to land, then use the the Bone Gryphon to hop on. Use Bone Armor whenever the cooldown is finished. When fighting the Onslaught Gryphon Riders, start off with Plague Strike and spam Frost Breath until the rider is dead. Kill ten riders to complete the quest.

If your Bone Gryphon's health is low, find a safe spot to dismount and re-summon it. You'll hop on a new Bone Gryphon will full health.

When turning in the quest, make sure to dismount your Bone Gryphon and use your own mount to fly back to Death's Rise. If you leave Onslaught Harbor, you will get a warning that says you might lose your Bone Gryphon. Although it's possible to get to Death's Rise while on the Bone Gryphon, you should just play it safe and use your own mount.

Of course, you can always kill the riders the old fashioned way: with your own weapons and spells. :)

SHADOW VAULT Quest Tree From Whiterock
Give + 12/30/2008 Starzinger aswell.

                    1)It's All Fun and Games{H}
                    1)I Have an Idea, But First...
                    1)Free Your Mind
                    1)If He Cannot Be Turned{H}
Orgrim's Hammer(H)* 1)The Shadow Vault{H}       The Skybreaker(A)*
         |          / |->Blackwatch* \              |
      Opportunity(H)* |              Exploiting an Opening(A)*
                     1)The Duke                                     
                      |      |
2)Eliminate the Competition 2)Honor Challenge-------->2)Get the Key
3)The Bone Witch             |->2)Shadow Vault Decree 2)Let the Baron Know    
 |->3)Reading the Bones          |____________________/
 |  R)Reading the Bones                    |->3)Vandalizing Jotunheim
 |                                         |->D)Leave Our Mark
 |->4)Deep in the Bowels of The Underhalls |->3)Crush Dem Vrykuls!
 |                                         |  D)Vile Like Fire!
 |->4)Revenge for the Vargul               |
 |                                        N)Vaelen Has Returned
4)The Sum is Greater than the Parts       3)Ebon Blade Prisoners
 |                                         |->D)Shoot 'Em Up
3)The Art of Being a Water Terror          |
 |                                        N)To the Rise with all Due Haste!
3)Through the Eye                         6)The Story Thus Far...
 |                                         |->D)From Their Corpses, Rise!
3)Find the Ancient Hero                    |->7)Blood in the Water
 |                                         |  7)You'll Need a Gryphon
3)Not-So-Honorable Combat                  |  D)No Fly Zone
 |                                         |->D)Intelligence Gathering
3)Banshee's Revenge                           7)The Grand (Admiral's) Plan
 |                                            7)In Strict Confidence
5)Battle at Valhalas                          7)Second Chances
5)Battle at Valhalas: Fallen Heroes           7)The Admiral Revealed
5)Battle at Valhalas: Khit'rix the Dark Master
5)Battle at Valhalas: The Return of Sigrid Iceborn
5)Battle at Valhalas: Carnage!
5)Battle at Valhalas: Thane Deathblow
5)Battle at Valhalas: Final Challenge
Quest zones:
1)Shadow Vault_____2)Savage Ledge_____3)Jotunheim_____4)The Underhalls_____5)Valhalas_____6)Death's Rise_____7)Onslaught Harbor
D)Daily_____N)Not-needed_____R)Repeatable
*Click to see more info about that quest-line.
The Icecrown is done! Leave your comments/sugestions at my comment in Icecrown zone. Thanks everyone who helped me to make it via comments on wowhead and in-game pre-quest tracking.

Do it with http://www.wowhead.com/?quest=12813 and http://www.wowhead.com/?quest=12838. You can kill the gryphon riders and loot the keys as well as turn them into undead.