Vigilance Essence Release

... Occurs when defiance is broken. — In-game description

Vigilance Essence Release

Defiance

Legendary Icebrood Construct

“

Vigilance Essence Release

...

Occurs when defiance is broken.

— In-game description

Vigilance Essence Release is automatically cast when a powerful Essence of Vigilance-imbued foe's defiance bar is broken.