Unstable Flasks are flask elixirs that can only be used in Blade's Edge Mountains and Gruul's Lair, and are as such designed to help groups defeating Gruul the Dragonkiller - especially on their first visits to the Lair, as the flask effects persists through Death.
There are 6 Unstable Flasks available:
| Flask | Bonus | Bonus | Bonus | Source | Cost |
|---|---|---|---|---|---|
 [Unstable Flask of the Beast] |
+20 Agility | +20 Strength | +30 Stamina | Fel Crystalforge at Forge Camp: Terror | 10 
|
 [Unstable Flask of the Bandit] |
+20 Agility | +40 Attack Power | +30 Stamina | Aether-tech Assistant | 10
|
 [Unstable Flask of the Elder] |
+20 Intellect | +8 Mana per 5 seconds | +30 Stamina | Aether-tech Assistant | 10
|
 [Unstable Flask of the Physician] |
+20 Intellect | +44 Healing | +30 Stamina | Aether-tech Assistant | 10
|
 [Unstable Flask of the Soldier] |
+20 critical rating | +20 Strength | +30 Stamina | Aether-tech Assistant | 10
|
 [Unstable Flask of the Sorcerer] |
+20 Intellect | +23 Spell damage | +30 Stamina | Bash'ir Crystalforge at Bash'ir Landing | 10
|