RPG Dice Set - Call of Cthulhu: Black & Green (7)

Imagine yourself, swimming in a deep ocean during night. The sea is cold and strangely calm... Suddenly, you see inhuman green shapes moving towards you ! Sensing danger, you swim in panic, trying to get away from them. Just when you think that those unspeakable sea horrors got you ... you wake up. A set of black-green dice lies at your table - and you are sure they weren't there when you fell asleep…