Potion of the Master Death Mage

 is an Alchemy craftable item.
 * These potions provide a bonus to each school’s mastery ability, and the bonuses scale with adventurer level and your specialization ability. Only one Mastery potion can be taken at any given time as they all share the same channel.

Trivia

 * 9 Potions of Magic Mastery and their recipes have been added to the game, one for each school of magic. These potions provide a bonus to each school’s mastery ability, and the bonuses scale with adventurer level and your specialization ability. Only one Mastery potion can be taken at any given time as they all share the same channel.