Star Feathers are required to upgrade wings above level 5. The star feather required for each upgrade is dependent on the level of the wings. As the level of the wing increases, the number of star feathers required also increases.
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Star Feathers are required to upgrade wings above level 5. The star feather required for each upgrade is dependent on the level of the wings. As the level of the wing increases, the number of star feathers required also increases.