From DivNull RPG
Though powerful, this stone is fairly bland, a simple sphere of starmetal.
Once per day, the bearer of this stone can slow her perception of time for a single turn. This allows her to take two completely independent actions during that turn.
Like all of the alchemical hearthstones, this stone respires essence at one-quarter the normal rate.
This stone is unique to the Starmetal Manse.
Summary: Slows time for the bearer once per day.