Numbers appear in the blink of an eye under black light. Each set comes with a black light stylus. Sharp edge resin dice for precision rolls. Eye catching foils shine through in natural and black light. Roll the die for a suspenseful reveal Did the BBEG fail the save or is the party in trouble Use them for blind challenges, disguises, or gambles. No one will know who won until the light reveals the numbers. Features. Cloak Dagger Dice Set. 7 Piece Specifications. Color Clear.