"A ring with a glowing gem, that allows the user to recover Spirit during battle." - Flavor Text
The Warrior's Heart (満月の指輪 Mangetsu no Yubiwa) is an accessory that can be equipped by Vyse, Aika, Fina, and Enrique. Equipping this accessory causes the wearer to recover twice as much SP at the beginning of each turn, though it doesn't provide any stat increases.
In both versions of Skies of Arcadia, the Warrior's Heart is an item that has a 5% chance of being dropped by the Guardian enemies found in Soltis. However, in the remake, one can also be obtained after feeding 12 Moonfish to Maria’s pet Hamachou.