The Flask of Battle was introduced in the World of Warcraft: Cataclysm expansion as a guild reward for alchemists.
They're obtained by use of either a or . When used, it grants the effects of a flask that's based on your class and talents. The base duration of this buff is one hour, but this is increased by the guild perk , increasing to 90 minutes at guild level 10, and 2 hours at guild level 22.
- Patch 4.0.3a (2010-11-23): Added.