Mageroyal is an herb that can be gathered with Herbalism (50), or bought in limited quantities from selected vendors. Mageroyal seems to be edible, as it is used in the recipe for . It is also mentioned in The Worst Mage in Dalaran - A Children's Book, where it is described as "glistening". The last paragraph of this work would seem to imply that mageroyal grows where magical activity has recently occurred, though obviously in the game it spawns in preset nodes.
As an ingredient
|Level range||XP gain on Gathering|
|5 - 13||?|
|15 - 16||?|
|24 - 30||200|
|34 - 35||40|
- Patch 6.0.2 (2014-10-14): Stacks to 200, up from 20.