Paper-Covered Rock (quest)

Objectives
Return the Paper-Covered Rock to someone within your faction's Brawler's Guild.
 * Paper-Covered Rock (provided)

Description
It's a strange combination of items. The paper envelops the rock completely, dwarfing it like a smothering blanket of wood pulp. Compared to the paper, the rock is barely a pebble.

When held up to the light, the paper reveals a distinct watermark, along with the text:

RETURN TO BRAWLER'S GUILD

Rewards
You will receive:

Progress
Good day,. Have you brought something for me?

Completion
Ah, you've found one of my treasures. Well done, adventurer.

In return, I will allow you to purchase one of my rare challenge cards.