Major Dreamless Sleep Potion

For the Alliance, this can be found at the Allerian Stronghold, sold by
Leeli Longhaggle (57,53)

I've already given away 4 copies. :)

Found these pretty nice while fighting Illidan, best you can use when switching between demon and human forms, when you will likely have to heal yourself. Takes 4 secs more than a bandage, heals for 600 more, and restores 3600 aditional mana. Just be careful with the healing aggro this baby will get you.

Edit: Let your healers know you'll be using this, else they'll most likely dispel it 1-2 secs after you pop it, wasting a pot cooldown

As of patch 2.1.0, the Alchemist's Stone now functions properly with Major Dreamless Sleep Potions, resulting in a total of four 1260 mana ticks for a grand return of 5040 mana and health.