So there is roughly a 1 in 2500 chance this could happen. The odds of being struck by lightning are lower, yet people do get struck by lightning. This is no different, it's simply a statistically improbable event that came to pass. Sucks though, since I got my voidfangs from the first time he sold body engrams, and would like a praxic fire to play around with someday. Randomness can be awesome, but it can also majorly suck.