Rule 143.2.a.1
Card text may refer to the latter two of these three forms. When cards or these rules refer to a Unit’s Effective Might, they will do so by simply referring to that unit’s “Might.” Example: A card reads in part “Choose a unit. Its base Might becomes 5 this turn.” This applies an effect in the trait-altering layer. Example: A card reads in part “Choose a unit. Increase its Might to 5 this turn.” This applies an effect in the arithmetic layer.