The electromagnetic adaptive camouflage system
The biggest reason that Amerikka Command survives to plague the Atlantic Federation, the only reason the ACPS hasn't destroyed the Python Pirate Syndicate, is their mastery and sharing of shroud technology.
Could be used for killing a certain animal...a prized animal. The bones must be carefully buried or disposed of lest a sorcerer get a hold of it. With the bones of the dead creature the sorcerer can kill the hunter.