San d'Oria 8-2 - Lightbringer

Lightbringer

Details
Royaulais Destin himself has summoned you for a vital mission. Seek audience with His Majesty Chateau d'Oraguille immediately.

Walkthrough
Talk to your mission guard, if he doesn't list the mission "Lightbringer", you'll need to donate a few crystals.
Visit the King, you'll see a cutscene.
Afterwards, talk to Rahal, located at the Royal Knights' Quarters, to receive a key item.

Now you're set.
Travel to the Temple of Uggalepih, located in Yhoator Jungle. There are two ways you can go about this.
If you already have a Prelate Key in your alliance (it's a one-time use and opens a door you will need to pass through), you're set.
If you don't, however, don't bother with it. My alliance tried to get the key for about 4 hours (they drop off Tonberry Stabbers) without luck. There is a trick, though, which I will get to later.

Zone into Uggalepih from the main entrance. Once in, take the right path, follow it till you zone back to Yhoator. Keep going straight and you will zone to a different part of Uggalepih.

Keep going, follow the right wall, you will pass by a wooden gate. Shortly after, the road will split. Take the left way and clear the area, as you will need to fight the guardian doll NM. After clearing it, pass through the door.

Now this is where it gets interesting. If you have a Prelate Key on you, pass through the door right above your heads up the stairs. If you do not, advance through the room and up the stairs on the other side. Huddle up at the door and proceed to cast magic till a pot will aggro you through the door and open it in the process. Pass through quickly, but be careful as you may have to fight adds.

Keep south after passing through the door (in other words, take the right path) and follow the road till you see 4 doors on the left.

(If you used your Prelate Key on the other door, take the left part after passing through the door and the 4 doors will be on your right.)

Clear the area, then enter room 1, 2 and 4 (1 is closest to you, 4 farthest *if* you went in without Prelate Key, exactly the other way around if you went in with the key) and collect 3 key items from the "???" on the shelves.

Once everyone has collected the three items, touch the 3rd door. Note: This will trigger two Doll NMs, so do not spawn them before everyone is ready.

They can blow up, so make sure to keep Barfira on your party. They cannot be slept and it's a rather difficult battle compared to the previous one, so having 2-3 PTs lvl65+ is advised.

After the battle, everyone click on the third door. You will get a short cutscene saying you couldn't find Lightbringer here and that your investigation is over. Return to San d'Oria and report to King Destin.

Reward: Rank9 + 80,000 Gil.