The Cinder Vessel broke down during testing. The rat I used inside was charred by the coalescent flame. A bright flash, then, nothing. Thankfully, the side effect of blindness was only temporary.
I've acquired a new subject. Another rat, Igni. Hopefully, our path to salvation. I cannot accept more setbacks. I will ensure that the Cinder Vessel holds as if my life depended on it. It may well.