Dagger Blade (ダガーブレード) is a spell that makes an energy blade expand itself from Cross Mirage's barrel. The blade itself has about the size of a large knife and, in the case of an emergency, can be ejected from the Device. Although the blade has a decent tearing power and can be imbued with anti-field defenses properties, the spell is ultimately considered unfit for actual combat, to the point where Teana stops using it after Cross Mirage's Dagger Mode is unlocked.