Formshift

From Fire Emblem - Wiki on Neoseeker

Formshift is an ability in Fire Emblem 9 and 10 that is unique to king or queen Laguz. This ability enables one to remain in their transformed state for as long as they wish. This ability is also replicated by the Laguz Gem in Radiant Dawn, where a laguz can stay in their transformed state for one battle. This ability is handed down to the heirs of a Laguz kingdom once the heir becomes the official king or queen.