“Powder that increases magic by 2.”
—In-game description, Shin Monshō no Nazo
The Magic Ring (マジックリング Majikku ringu) is a Stat booster that recurs across the Fire Emblem Series. In general, the Magic Ring permanently increases the Magic of its user when used. The merging of the Strength and Magic stats in the GBA titles sees the Magic Ring's role being taken over by the Energy Ring instead, where it permanently boosts either stat, depending on the type of weapon wielded by its user.
In Gaiden, the Magic Ring (まどうのゆびわ Madou no yubiwa), when placed in the inventory of any unit, boosts their Magic by 5 points, alongside restoring some of their HP at the start of each Player Phase.
In Genealogy of the Holy War, the Magic Ring must be placed in the inventory of any unit in order for its Magic-boosting property to take effect.
Beginning from Path of Radiance, Strength and Magic are treated as separate stats yet again, a fact that sees the Magic Ring returning to the series in the form of Spirit Dust (精霊の粉 Seirei no kona).
In TearRing Saga: Utna Heroes Saga, the Magic Ring's equivalent takes the form of a potion that is simply known as the Magic Plus (MAG プラス MAG Purasu), where it permanently increases its user's Magic by 2.