Sprite Darter Egg



Sprite Darter Egg is used to summon Sprite Darter Hatchling, a faerie dragon companion.

Source
This companion was previously a quest reward from. Since patch 4.0.3a, the quest chain has been removed from the game and the pet is now a zone-wide drop with a low drop rate. As patch 3.1.0, Horde members can obtain this pet too. It rarely drops from Sprite Darters in Feralas.