"I'm talking about mana, something that only a living being can produce. I think that after thoroughly manipulating their specimens' bodies with light magic, the Odi found a way to extract, purify, and store mana from other living beings.
"This, let's call it neutral mana, is something without an energy signature, allowing it to be used without suffering from mana poisoning.
"Hence, a Mana Reactor can only be fueled by living beings, which also explains why the Meat Factories have been moved down here, why the Odi have kept breeding them up to this very day, and how they were able to craft Flesh Golems.
"Forgemastering those dreadnoughts is otherwise impossible."