Urðr

Urðr (ウルズ Uruzu) is an axe and a weapon skill exclusive to Azura (Performing) in Fire Emblem Heroes. It boosts attack, speed, defense and resistance of the target by 3 when Sing or Dance is used.

Etymology
In Norse mythology, Urðr is one of the trio of Norns, the female beings who rule the fates of gods and men.