Toz couldn't quite begin to imagine what would happen to his magic in the future since the only attributes that had already begun diverging from their source, the cats, were the fire and void attributes.
However, after thinking about it a little more, Toz realized that his other elements had also gradually begun taking their own shape, separate from the cats he got them from, thanks to his inclination.
Lucy's offensive darkness magic focused on manipulating a target's mind. He was also extremely proficient in concealing his presence using shadows. Toz's darkness magic, on the other hand, had developed into severing the physical and bodily sensations of his target due to the development of his own darkness spell, Void's Embrace.