Troia

is a Sky Dragon Slayer Magic Spell.

Description
The user generates a sphere of energy between their hands and then touches the target with it, affecting their sense of balance. Wendy Marvell has used this spell on several occasions to heal Natsu Dragneel's severe motion sickness. In spite of lasting for a decent amount of time, the spell's effect is only temporary, and, if cast continuously, it will become useless.