Goblin Parchment is the preferred medium of nobles and nockers for sending secret messages, especially threats. Writing on Goblin Parchment is only visible to the intended recipient and the paper burns up immediately after it is read. It also resists all attempts to copy the information on it, even by other nockers or Sluagh Wordspiders. The Sidhe nobility has recently instated laws limiting the sale of the parchment to other kith so the material is now a valuable black-market commodity. It is usually acquired in 10-sheet bundles.
This is a proscribed Treasure so only Nockers and occasionally nobles may legally own it. It may not be sold to other kithain.