For start this quest you must be at level 76 or above and have Mark of Ketra or Varka alliance level 3.
To do Mark of alliance in Varka or Ketra location speak with apropriate NPC.
If You choose Ketra You will kill in Varka and vice versa.
If You choose port to Ketra you need to speak with NPC near spawn “Wahkan” – Here choose “Alliance with Ketra Orcs”
Now you need to kill monsters in Varka Territory. Remember you now can’t hit any Ketra orc monster in Ketra region, or you loose one stage of ally with them!!!
If You choose port to Varka you need to speak with NPC near spawn “Naran Ashanuk” – Here choose “Alliance with Varka Silenos”
Now you need to kill monsters in Ketra Terriotry. Remember You now can’t hit any Varka silenos monster in Varka, or you loose one stage of ally with them!!!
After that you do 3 levels of Alliance, you get item “Mark of Ketra’s Alliance – Level 3” or “Mark of Varka’s Alliance – Level 3”
Now You are almost done … Go to Town of Giran and speak with NPC “Sir Arthur” – Its near GateKeeper in Giran.
He trade you scroll for Mark Level 3 item.
Now you have scroll in inventory.
Thanks to this scroll you will be teleported to special room with an NPC Raid Boss (You can kill him alone without problem). Teleport to this room is long … about 20minutes. But dont worry in this special room is Buffer nad Grimli with shots, mana.
After 20 minutes you apear in room with NPC name “Sir Cadogan“. Click on “Tell me please about the heroes please…”
You may need to log off and log on again, to take quest.
Speak with him again and If you see this dialog it is fine to kill Raid boss in room!!!
After that You kill the Raid boss you obtain the Claw.
Now speak with “Sir Cadogan” again and click on “Tell me please about the heroes please…”
You give him the Claw and he give you L2Teardrop Item. Now You have 15 minutes to choose your Stack-Subclass. So speak with him again and he will show you classes that You can choose as your Stack-Subclass.
Now You can teleport out of this room with Triol’s Mirror teleport. And Your Stack-Subclass Quest is finished !!!