Elvish Talisman Quest
From Realera Wiki
Name: Elvish Talisman Quest.
Location: Elvers.
Reward: Elvish Talisman.
Monsters: Winter Elf, Winter Elf Fencer, Winter Elf Harbinger.
Spoiler:
1). Start from Elvers. To get there you need complete the Anvers Island Quest and have 150 level.
2). Take a team with 4 players stand on tiles and pull the lever, then follow the maps: