In "Overwatch", what is the name of Mercy's "ultimate ability"?

The name of Mercy's ultimate ability in Overwatch is Valkyrie. Valkyrie allows Mercy to transform into a powerful and airborne state, enhancing her abilities for a short period of time. During Valkyrie, Mercy gains increased mobility, faster healing and damage boosting beams, and the ability to revive multiple allies at once. This ultimate ability is highly impactful, providing the team with significant advantages during critical moments in the game, making Mercy a valuable support hero in Overwatch.