, one of the two quests which are a prerequisite to the Hands of the Enemy chain was removed after patch 3.0.8, and the Feat of Strength was rewarded to players who had obtained an Aqual Quintessence; however, if you had obtained or completed the quest Poisoned Water (which along with [57R] is a prerequisite to the quest chain) you may still obtain and complete Hands of the Enemy and get the Feat of Strength.
- It was used to douse the runes that exist in Molten Core. When all seven runes are doused (one for each boss except Lucifron), Majordomo Executus will spawn.
- The Eternal Quintessence, a permanent, non-consumable version of the Aqual Quintessence, was introduced in Patch 1.11 for players once they have reached revered reputation with the Hydraxian Waterlords. This eliminates the need for players to travel to Azshara every week in order to summon in the Core.
- Patch 3.0.8 (2009-01-20): Aqual Quintessence and Eternal Quintessence are no longer needed to extinguish runes to reach .