Flask of Pure Death

Flask of Pure Death is a consumable that increases the player's spell damage from Shadow, Fire and Frost spells for 2 hrs.

Source
Flask of Pure Death is created by Alchemists with a skill level higher than 300.

The recipe is discovered while making other potions. When you make potions you have a small chance of learning new flask recipes.

Uses
Provides players with increased Shadow, Fire, and Frost spell damage by 80 for 2 hours.