Possession Potion or Curse Potion

I designed this item for players or game creators who are an agent of chaos. What's the worse that could happen when you release what is in here? Or, use this as a generic curse potion in your item shops or magic shops.   ---------- Specifications ---------------------- ~34mm Tall Miniature Configurations: Freescale, Full Version Dual Colors Base has a spot for 4mm by 2mm tall magnet All STL parts come pre-supported through Lychee.