Flask of Relentless Assault

Flask of Relentless Assault is a consumable that increases the player's attack power.

Source
Flask of Relentless Assault is created by Alchemists with a skill level higher than 300.

The components are:

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

Uses
This is an extremely useful flask, and every raiding guild should have someone who can make this. It is useful to give this flask to the rogues, hunters, warriors, feral druids, enhancement shamans and Retribution Paladins when needing that little extra damage output. The additional attack power will let you kill bosses and mobs more quickly.