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Questreihe

Sprich mit dem Torwächter von Yggdrasil bei (nyd_dun02 99, 199).
So erreichst du den Torwächter:
Betritt den Yggdrasil Dungeon bei (spl_fild01 368, 112).
Betritt das Portal bei 3 Uhr auf der Karte (nyd_dun01 252, 144). Die Portalmarkierungen auf der Minikarte dienen nur als Ausgänge.

Sobald du Level 2 erreicht hast, geh nach rechts, bis du eine Klippe erreichst. Steuere das „Seltsame Gerät“ bei (nyd_dun02 137, 274) und überquere den Canyon, indem du auf die Kreise trittst. Wenn du außerhalb der angezeigten Kreise trittst, gelangst du zurück in die untere rechte Ecke der vorherigen Karte. ({{#navi:)Schurkenklassen können Tarnung nutzen. Schalte Tarnung unbedingt aus, wenn du den letzten Kreis erreichst, damit der nächste Kreis erscheint.)

After crossing the cliff, follow the path consisting of stairs and roots until you've arrived at a gate at (nyd_dun02 99, 199).
Tell Commander Agip (mid_campin 90, 121) about the cave you found, he tells you to find Historian Magnifier.
Ask Historian Magnifier (mid_camp 271, 299) for help. He tells you to visit his assistant in the Prontera library.

In the west Prontera Library (prontera 120, 264), talk to Assistant Naomi (prt_in 171, 94), and she will give you several papers to read.
Return to Magnifier, he tells you to go investigate what the Laphine and Sapha know. Chose to go to either the Laphine or Sapha.

Laphine:

Talk to the Grumbling Soldier in the Splendide (splendide 198, 178), and ask him about the tree.
Go inside the central building (splendide 197, 191).
Then speak to Commander Lebiordirr (spl_in01 110, 60).

Sapha:

Inside the building in the far right of Manuk (manuk 309, 142), talk to the Laphine Prisoner (man_in01 291, 62).
Talk to Neat Etorr (man_in01 311, 57) in the same building.
Return to Magnifier, he tells you to speak to Commander Agip to get his opinion.
Commander Agip decides to ask both tribes for help exploring the cave. This will force each to help you to prevent you from getting help from their enemy.
You are presented with a choice of which tribe to go to in order to seek assistance.

Laphine Branch:

Speak to the Laphine Commander, and threaten to ask the Sapha's help if she refuses hers. She will agree to help and ask you to talk to Aide Arioss.
Aide Arioss (spl_in01 104, 56) will give you a token to mark you as a guardian of the Yggdrasil and tell you the password to get past the door.

Sapha Branch:

Return to the building in Manuk and talk to Neat Etorr again.
Talk to the Laphine Prisoner twice.
At this step you can now enter the Nidhoggur's Nest Instance. After you clear the instance, talk to Yggdrasiliad in the final room.
Chose if you want to go to Splendide or Manuk for your reward.

Splendide:

Talk to the Laphine Commander, and then Arioss. You will receive 150,000 Base EXP, 3,500 Job EXP, and 10 Splendide Coin (6081) .

Manuk:

Talk to Etol, and then with the Laphine Prisoner. You will receive 150,000 Base EXP, 3,500 Job EXP, and 10 Manuk Coin (6080) .

Guardian of Yggdrasil