What It Is
A masterwork blade of Mithril, the fuller named — the blade that moves, the anvil-singers' signature, the one the story remembers. The mithril holds the promise without breaking it, and the promise is the one the blade was made to keep.
The Making
Made by the anvil-singers and the runecasters, crossed — the mithril took the shape at the anvil, and the rune took the promise at the season. The masterwork grade is the one the hold gives a lifetime for: the mine's life for a handful, the handful for a blade, the blade for the story.
Tier: masterwork · Damage/Role: slashing · Held by: the anvil-singers — the one that moves
On the ladder in The Maker's Hand, this is a masterwork — a story event, and the story remembers it.
In Stories
The blade is the one the story is about: the anvil-singers' plate that moves, the anvil-singers' blade that keeps. When the blade is raised, the promise is kept — and the keeping is the one the world has to remember.