The Judiciar

 Vulkan He'stan:

The trip to Zero will be perilous, and reinforcements will be required. A powerful Judiciar is joining us from a planet besieged by warped traitors. We will need to help him get off-world if he is to help us acquire The Unbound Flame, which I have learned is the stasis capsule that served as Vulkan's coffin on Macragge. It is hinted that it's power holds the key to bringing someone back from the dead. We must retrieve it at all costs!

  

The pickup of our Judiciar did not go smoothly. The traitors were ready for us and sent all manner of foul abomination against us. The extraction team did an admirable job holding the line and destroyed many of the heretics, however, when faced by their loathsome commander our Judiciar sprang into action. Charging the axe-wielding maniac, he delivered vicious blows with his runic-blade, but his zeal caused a misstep which lead to his demise. The axe tearing through the Judiciar incensed my brothers greatly. They were able to push back against the lines long enough to retrieve the body, but we were dealt a sad blow that day. The Unbound Flame is needed more than ever. Perhaps we can use it to bring our brother back. . . .

From the author: In this fiction The Unbound Flame is the stasis capsule they put Vulkan in when he died falling through Macragge's atmosphere. It has the ability to bring someone back from the dead but requires a willing sacrifice to work, trading a life for a life. I believe this meets the requirements of "a device both terrible and wondrous" and it plays upon the sacrifice Numeon made to bring Vulkan back from the dead.