Fighting among one's own clan members required caution to avoid accidents and fundamentally could not stimulate their potential, as they were bound hand and foot. This problem did not exist with Nightmare Creatures.
They would fight with all their might for survival, without holding back, and this type of battle, constantly facing death, was highly effective at stimulating potential and made them very likely to advance.
Due to the overwhelmingly huge power gap, most of the five Children of Nightmare were simply crushed, and only two, unwilling to accept their fate, burned their very origins, their Divinity, which is why the Divinity awarded for killing them was slightly less.
The five Children of Nightmare provided a total of sixteen, seventeen, nineteen, four, and five points of Divinity, adding up to sixty-one Divinity points.
Over a hundred different cards were obtained, among them were four Ancient Quality Cards.