The user must know these spells: Elemental Weapon, Booming Blade, Branding Smite, Ice Knife, Magic Weapon, Mordenkainen’s Sword, Shadow Blade, Searing Smite, Spiritual Weapon, Staggering Smite, Steel Wind Strike, Sword Burst, Thunderous Smite, Wrathful Smite, Zephyr Strike, Green-Flame Blade,  Flame Blade. Then the user must preform the proper hand motions, upon doing this the user sacrifices all listed spells and can no longer use them, but the summon the ethereal Unyielding Blade.