Haxtec Heat Sensitive Metal DND Dice Set Color Changing Metal Dice Temperature Polyhedral D&D Dice for RPG Dungeons and Dragons-Haxtec Magician Metal Dice Series offers heat sensitive metal dice that can change colors temporarily by temperature. While warmed by body temperature, like your hands, the dice turn to another color. After cooled down, they go back to original color at room temperature again. This wonderful color changing effect can last for 10 20 years after it stops. Usage: Perfect for RPG table top board games such as Dungeons and Dragons, Shadowrun, Pathfinder,