"Throw it up high!" Vera said as she double-checked and made sure that all flashes of lights had really hit their designated targets and that her set up for the next spell that was about to manifest was ready.
Right after the steel cube left Blake's hand and flew up above their heads, Vera once again powered the steel cube in her hands, making it produce one more flash of white light, shooting it outwards, straight into the flying steel cube.
The flying steel cube had eaten enough nether, an abundant amount of them actually, that it was more than ready to manifest the spell contained inside it.
However, the steel cube still hadn't released the spell yet since Vera was the one who made it that way. In order for the steel cube to be able to manifest the spell inscribed to it, it needed an auxiliary component.
And the single flash of light that Vera had just sent to it was the last missing piece that was needed by the flying steel cube to do it.