Most Duality dice require you to balance between 2 vastly different abilities on the same die. Any effect from Duality skill dice that refers to numbers on the side of a die does not include the the number denoting the level of the die. Each adventurer may not train more than 1 Duality die of a given type. *Work in progress. Constructive feedback is appreciated. At the moment, I feel less confident about this skill line compared to other skills lines I have created, but I love the core concept of switching between 2 diametrically-opposed abilities on the same die.