Lighthouse Ore
Little Tolly was supposed to be a jack of all trades but master of none. However, this speed was even faster than a true master of this purification path should have found possible. He didn't have much of a reference outside of what he had read in the Void Library, but he was certain of this. It wouldn't have been a surprise even if it took days, and the Spirit in question should have had to swallow the Ores first, process them, and then expel them… not just tap them once.
Leonel knew that the beast would cause some great changes in Little Tolly, and he even expected that the little guy would be more of a master than he knew. But this was greatly exaggerated.
Of course, the ores weren't perfect. He only commanded Little Tolly to make them identical, but he didn't specify how, or what parameters he wanted. So, he assumed that the little Metal Spirit had chosen the easiest path, and not the path best for his army, but he didn't care very much.