Think of it like this. Say you have a resolve of 50. A morale check is then made to see if your morale improves. For the purpose of this check the character then counts as if he has a resolve of 55, assuming no other modifiers. However, this is not an increase of his resolve, but a situational boon applied to a postive morale check because of the trait. There’s no actual increase and his resolve will not become even higher when applied to positive morale checks on turns that follow – it will always be 55, because his actual resolve is still 50. There’s therefore no stacking effect.
