Despite being named after the town Lillandril in the Summerset Isles, the flask itself is not of elvish make; rather it was discovered there in 1E 470, used and eventually lost, its creator still a mystery to this day.
Legend says that a stable boy once defeated the High Wizard of Valenwood with the powerful artifact. Fearing from retaliation by Bosmeri assassins, a group of Altmer took the flask and attempted to escape to Daggerfall in High Rock, hoping to buy safety from the Direnni Clan. However, they became shipwrecked and perished off the coast of Stros M'Kai.
- The flask appears on the flag of Lillandril in The Elder Scrolls Online.