Pixie Prick is an enchanted dagger +3 which can make enemies fall asleep for two rounds when they fail their save roll vs. poison. This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition. It can be found in the Planar Prison area which can be accessed during the side-quest to save Rescue Raelis and Haer'Dalis from the Planar Prison. It's dropped by the first group who attacks you when you enter the area.
|“|| Pixie Prick +3
The Pixie Prick almost appears to be a toy, so fine and delicate is the workmanship of the blade and handle. Yet when wielded and the command word 'Sleep' is intoned, the tiny dagger glows with a blue nimbus. Upon striking an opponent the Pixie Prick releases a surge of powerful magic, potentially inducing a deep slumber. Legends say that the ancient sprite knight, Alfonso de Noble wielded the Pixie Prick, not as a dagger but as a two handed sword.