Also known as Etheric Zone

Say help, then Skeleton Centaurs to Dionysus Argantma, the Centaur Priest, located in the Centaur City.

Go kill 12 Skeleton Centaurs, located in the basement of the Mordenthal Castle, then return to Dionysus Argantma and say Skeleton Centaurs again.

Rewards:

• 10,000 XP per level
• Horse Friendship Scroll

Have 1 Horse Friendship Scroll, obtained via the Horse Friendship Scroll quest, and say Horse Friendship Scrolls to Malachai Thanatos, the Centaur Archer, located in the Centaur City.

Reward:

• 9,000 XP per level

And, randomly:

• Assassin Blade
• Hellish Robe
• Sinister War Blade
• Centaur Slayer Bow

Have 2 Assassin Blades, obtained via Malachai's quest, and exchange them with Daran Lightfoot, from the Stonecrest Tavern, for a Broken Etheric Key, by saying Assassin Blade, then yes.

Rewards:

• 1,500 XP per level
• Broken Etheric Key

Go see Bastien Milandra, located in Beltigan Castle, with the Broken Etheric Key, obtained via the Broken Etheric Key quest. Be careful, Bastien is temperamental and will only help you if you answer him kindly!

Say name, yes, work, yes, help, yes, seraph, yes, etheric key, and finally yes to Bastien Milandra.

He will then give you the Etheric Key.

With this key, you can access the Etheric Zone via the Etheric Portal, traveling through the area between the Spider Cave and the Green Skraugs.

Reward:

• Etheric Key