From The Forge: The Imprinter's Doll
Syrian laid an old creepy doll and five Movelockcontest stones on The Forge. The stones shattered, and their crystal dust was packed into the doll's cuts.

The Imprinter's Doll yields one Heat stone a week. The heat has a price: each time, a curse falls on two of its owner's creatures, chosen at random, for seven days. A cursed creature fights with a quarter less attack, defence, power, regeneration and luck, and its creature page shows the curse until it ends.