St Ives the Selfless

When Shades awoke, he found Rosliand Weyld awaiting him. There are worse people to see immediately upon waking, but the 16-year-old in spiky full-plate had a permanent intense expression, as if she had just decided that she wasn't going to stab you after all. After introductions and niceties had been exchanged, Rosiland handed shades a teak box, inscribed with the symbol of Thyr. The box was clearly centuries old, and smelled like incense and dust.
Inside were 6 miniscle glass vials, each holding a flek of a substance that looked like liquid gold. "Angel blood" said Rosliand, obviously trying to be helpful. "When St Ives sacrificed himself to stop a war, Thyr blessed him to rise as an angel, but Ives refused. Ives told Thyr that sometimes goodness had to go unrewarded, if sacrifice was to mean somethng." 
Rosiland shrugged, not weighing in on the theological debate "Thyr accepted what Ives said, and allowed him to die as an angel, to show the world his selflessness."
Shades stared at Rosiland bleary eyed, which Rosiland took as an invitation to continue. "Then the priests of Thyr took his blood, and put it in an urn...or something?" Rosiland paused, thinking about what she just said "But I don't know why they took his blood...I guess it's a Thyr thing, about not allowing blood to spill on the ground?" this clearly made sense to her, and her confidence returned "Yeah. They didn't want his blood to stain the earth, because that's a Symbol of Muir, so they took his blood so he would have died pure. There was rather a lot of it, apparently, and it was used as a kind of Amber Rose for sick people for a while"
Shades recovered a little "You probably mean Ambrosia", and Rosiland nodded
"You only needed one drop, and it would heal everything, even the things you didn't know were broken. Anyway, when Queen Illden took the throne, Uncle Dakra dug up a lot of the old royal stuff. Among it was a small vial of the blood of Ives, hidden in a picture frame! When she heard about it, the Queen measured out six drops for The Great Downward, to say thanks. She said that you were to drink it before the next lot of undead arrive. While it might be more useful after, she said you can't risk the blood falling into Orcus's hands. Even one drop would be disasterous. Anything you don't drink now, I have to send back to Skor. If it's fine by you, I can go find the other Engineers and offer them some"