Patch 8.1.5 brought a new achievement: Master Calligrapher

I'm not 100% sure about this, but it seems like each world quest offers only one part of the achievement (similar to Sabertron Assemble).

I've just completed Quest 55264 and it was the square pattern. WowHead lists all other Calligraphy quests under "See also", but we'll have to figure out which quest is for which pattern.

edit:
https://www.wowhead.com/quest=55340/calligraphy is the circle pattern.

As always, thanks for the info.

Master Calligrapher is now part of v8.1.0-11beta

Let me know, if you have more infos about the other quests.

https://www.wowhead.com/quest=55341/calligraphy is the triangle.

It seems like both Alliance and Horde have exactly 3 Calligraphy quests. Since I'm only playing Alliance I won't be able to provide any more information about which remaining quest Ids are for which pattern.