Magic Powder

Magic Powder is a special substance obtained in The Legend of Zelda: A Link to the Past and The Legend of Zelda: Link's Awakening.

A Link to the Past
In A Link to the Past, Magic Powder is formed out of mushrooms like that found in the Lost Woods. A Witch is capable of creating the powder for Link if he is to present to her the fungi.

Uses
The Magic Powder's primary function in A Link to the Past is to perform acts of transformation. Examples of this include turning Buzzblobs into Cukemen, reforming Anti-Fairies into Fairies and changing certain enemies into harmless piles of slime.

Sprinkling Magic Powder on the strange statue near the Blacksmiths house awakens a bat-like creature who then "curses" Link, cutting the Magic he uses by half.

Link's Awakening
In Link's Awakening, Magic Powder can be received in one of two ways. It can either be created by a Witch after giving her the Sleepy Toadstool, or simply by winning it at the Trendy Game.

Uses
Magic Powder in Link's Awakening is mostly used to construct fires and kill certain enemies, though it can also be used to wake Tarin from an odd slumber.