Mark of Narician active a new quest, but...

It gives 1mil exp as its reward.

EDIT:
Basically to do it you need the Mark of Naricain, be lvl 90, and have finished these quests

 Spoiler

The Mark of Heroism
Stemming the Tide
Rags to Riches
The Fallen Warriors
Rags to Riches(redo)
Lost in Translation 1
One Step A-Head
Finding Jack
Lost in Translation 2
One Step A-Head.(redo)
Translated Communique
Lost in Translation 3
Catch a Bigfoot by the Toe.
Catch a Bigfoot by the Toe(redo)
The Brewing Storm
Fool's Gold
Bounty Master
Storming the Castle
The Fallen Woods
Fool's Gold.(redo)
The Right Path

credits to haha01haha01