10 minute cooldown (need to be Google Lens translator mistake). It may be used if you equip the Divine Spirit, there isn't any require to master the ability. "Driving into fight on a mount, this character is usually a terrifying pressure which commands his Dark Raven and Dark Horse https://bookmarkplaces.com/story19650055/divine-spirit-e-dark-horse-mu-season-20-no-further-a-mystery