The Dream Courts Quest/Spoiler

Method
Find Myzzi to the northeast of Edron. Ask her about entrances, then yes.

Court of Summer
Find the portal located to the northeast of Fae Village.

Go to the north and you'll find some stairs to a lower floor. There, you'll find NPC Vanys. Ask her for a task to receive a Dream Talisman.

After talking to him, you will need to find 8 stones (4 Ice Ward Stones and  4 Sun Ward Stones) and use your Dream Talisman on them.

Until here, all you have to do is to use the item on the Ward Stones. After this, you'll have to do some missions.

7. Port Hope

Now it will be necessary to fix a Broken Compass with Andrew Lyze, for this he will need 50 Blue Glass Plates, 15 Green Glass Plates and 5 Violet Glas Plates.

8. Outlaw Camp

You will need to find 3 passages to Stricken Soul. One is right here in the cellars, one in the jungles of Tiquanda and one in the deserts of Darama.

Court of Winter
Find the portal at Tyrsung Mountain.

Find NPC Undal.

Cellar
Go to the outlaw camp and enter the basement of the abandoned house. Talk to the Stricken Soul, sey yes, yes and then your name. Now, explore the basement and go to the south-eastern room where you'll find a skeleton between many Spider Eggs. Use it to obtain a Strange Empty Bucket. You will have to fill it with ectoplasm. Use it on Mutated Eggs you can find all around the cave and it will slowly fill up.


 * Note: Not all attempts at filling will work out, you'll have to do it multiple times, from 5 to maybe 15 Mutated Eggs.
 * Note²: The Ectoplasm leaks through the bucket in 3, 2 or 1 minute depending on how full it is, so you can't take too long between Eggs or it will reset.

Once you have a Bucket Full of Ectoplasm, run back to the skeleton room, use the bucket on yourself (you will turn into a Slime) and then step in front of the door covered with Pure Energy to the east. You should be teleported inside. This part is done.