|First appearance||Skyward Sword (2011)|
|Use||Upgrades the Goddess Sword|
Transforms the Goddess Sword into the Master Sword
- "Faron Woods... Eldin Volcano... and Lanayru Desert... A sacred flame is hidden somewhere in each of these lands. Seek them out, and purify your sword in their heat. Only after your blade has been tempered by these three fires will it be fully imbued with the great power for which you search."
- — Old Woman
The Sacred Flames are quest items from The Legend of Zelda: Skyward Sword. They are three magical flames left behind on The Surface by the Golden Goddesses: Farore's Flame rests within the Ancient Cistern, Nayru's Flame rests within the Sandship, and Din's Flame rests within the Fire Sanctuary. Each of the Sacred Flames has a color that corresponds to that of the Golden Goddess who created it; green, blue and red respectively.
The Sacred Flames serve the purpose of purifying the Goddess Sword when it is imbued with their sacred power, allowing it to transform and its powers to be enhanced. Each Flame was intended to be guarded by one of the Three Dragons, but due to the death of Lanayru and the unexplained absence of Eldin, only Faron is able to perform this duty. Collecting a flame also causes one to be chosen by its corresponding piece of the Triforce, assuming it has not already chosen a host.
The Sacred Flames are revealed when Link activates a Goddess Crest; Fi then absorbs the flame, and unleashes several bolts of fire as she returns to the sword, transferring the Flame's respective attributes to the sword. Each flame has its corresponding transformation: Farore's Flame strengthens the blade, making it longer and doubling the damage it deals; Nayru's Flame allows Link to dowse for more items by increasing Fi's dowsing power; and Din's Flame transforms the Goddess Sword into the Master Sword.