Mined from the petrified cadaver of a great dragon, this is the beast's still living heart. Obviously not as petrified as the body housing it, and like many Hedgebound things, it isn't shaped as a heart, or anything at all. Always rushing, moving, twisting, but still. Moving like blood and stone, the red of the moving mass, mesmerizing in contrast to the black-green of the solid rock grit binding it.
It arrives in Sacramento through whispers and rumours, the Dread Lord Rhodes began researching ways to circumvent the strange ineptitude of a Freehold Pledge within the bounds of Sacramento. Finding signs of the Wyrdstone, he brought it to the attention of the Spring Queen Seraphina, who brought in the Summer Queen Circe. Together the three Monarchs looked for the Wyrdstone, and finally finding it up for Auction within the Hedge side of a hollowed Church.
The Monarchs were outbid, though thankfully the person who had won the Auction wasn't unreasonable, and was willing to trade for it.
Now the Lost of Sacramento have the Wyrdstone, and with it a way to make sure those who come into Sacramento are not Loyalists or Privateers.
Mechanically the Wyrdstone does not take up Pledge slots, nor dose it us up Willpower. It feeds off Glamour.
Needing the Reigning Monarch's Glamour during their Coronation/Solstice/Equinox to bind all of their Court to the Freehold. For the Courtless, it would need a Glamour point from each individual Courtless Changeling, at least 4+1 times a Year. Once when they arrive, (if they arrive before/after a Coronation), then they should be taken to the Wyrdstone to pay, so they're in the clear. Then they'd pay up at the next Coronation, and hopefully fall into the normal Seasonal structure of paying. Hopefully showing the Courtless as an outlier, and the benefits of being a part of a Court.