I'd say that when mentioning aurora blades and stolen nul-fire of singularities he's just using flowery language to say he used physics/reality bending weapons platforms. The word "Stolen" would be - to my best guess utalizing laws of nature/physics not meant for humans, "Nul-fire of singularities" is describing basically blackholes, nulfire would be because a vacuum is completely devoid of heat, being the coldest something can be. But then again - with Raspies' poetic language - you might be spot on. Aurora Blades might just be his way of saying he used laser/plasma technology to fight as well as his singularity weapons.