Instructions
Speak with Aer, the spirit of water, on Ceo Island after finding the NPC ideals and receiving the "Find the Ideal Type" quest from the owl.
Talk to Nele in Emain Town Square.
Return to speak to Aer and then go back to talk to Nele. This time Nele will give you "Nele's Score."
Take "Nele's Score" to Aer. Talk to her and take "Aer's Letter." You will also get the keyword "Mythril Mine" for completing the quest.
Head over to Bangor's general Shop and use this new keyword on Gilmore. You will get a pass named "Mytheill."
Place the pass in Barri Dungeon. Mine 27 Mythril ores and leave.
Go back into the dungeon to get Goibne's Blueprint for Mythril Armor from the treasure room.
Talk to Edern the blacksmith. Show him the Goibne's Blueprint for Mythril Armor and give him 5 Mythril Ores.
Wait for around 3 in-game hours and you will be given a new, yet similar quest. Deliver another 5 Mythril Ores to Edern to complete it.
Wait another 3 in-game hours. Give 10 Mythril Ores to Edern and show him the Goibne's Blueprint for Mythril Armor.
Deliver 7 more Mythril Ores to Edern after waiting for at least 3 in-game hours. You now possess Paladin's Armor.
Speak to Aer at Ceo Island and use the keyword "Mythril Armor." The "Paladin's Armor" that you possess will transform into Paladin's Armor with the Spirit's Blessing. You are also given the Red Wing of the Goddess to Ciar Dungeon.
Place the Paladin's Armor with the Spirit's Blessing on the altar of the Ciar Dungeon. Make your way through the dungeon and you will face the Giant White Wolf.