This series of quests isn't required like the last set to enter the Shimmering Citadel but it makes it darn convenient to be able to port up to a central location from your inn room.
Reward: A carpet placed in your inn room. The carpet is the requirement to enter Poet's Palace.
First you'll have to fight your way out of the basement and take the elevator up to the Citadel itself. You'll need to find the Curator who resides in the tower on the opposite side of the citadel from the librarian. He will give you the quest called The Master's Museum and ask you to collect one of the following:
Flawless Pelt: From Great Sandstalker Sabertooths in Pillars of Flame. This is an update drop so you have to kill multiple Sabertooths.
Cyprus Needle: Harvested at the Great Bonsai Tree. Be careful of the heroic Harpies.
Impeccable Windsister Headdress: Windsisters. Also an update drop so you have to kill multiple Windsisters.
Broken Shackle of Tan'ke Rei: This is a 55 on top of the Djinn Island in SW Pillars of Flame
Polished Sandscrawler Crystal: Kill Sandscrawlers in Pillars of Flame
Perfectly Preserved Kromtorr Magi Turban: From Kromtarr Magi's in Pillars of Flame
Next you will have your quest to visit the Scriptorium, requiring the collection of 3 simple items.
You will need to harvest a cage from the north tower, an orb from the south tower, and an elixir from the east tower. Respawn on the creatures inside 2 of the 3 towers is ungodly and your group will be fighting a significant amount of the time if you wait around.
The Curator will speak to you about the Librarian and treachery is in good preparation. Now you will have the quest named the Caretaker. Be forewarned the Librarian will proceed to try and open up a can on you.
The last quest: Be Careful What you Wish For.
First, the Caretaker wants you to fetch him 3 items: a red pillow, a meditation mat, and a phoenix egg. The red pillow spawns in randomly in Maj'Dul merchant tents. The Phoenix Egg lies among the Cyclops in Pillars of Flame.
This one is in Living Tombs and in my mind was the toughest to find because of the sheer size and hostility of the zone. It's a huge cup probably coming up to the height of a dwarf so ignore the ground clutter.
The Caretaker now sends you to a solo instanced version of the Tower of the Moon in Maj'Dul.
There are Djinn bottles you must harvest from the second and third floor.
At this point, get together your group. The Caretaker has also been treacherous and so like the A-Team, your group will have to take care of him but unlike the A-Team you'll actually hit him. He is a 56 but once he is killed, your quest is complete and you'll have access to Poet's Palace.