Most Conditions, such as blinded, are impairments, but a few, such as invisible, can be advantageous.Ī condition lasts either until it is countered (the prone condition is countered by standing up, for example) or for a Duration specified by the Effect that imposed the condition. Conditions alter a creature’s capabilities in a variety of ways and can arise as a result of a spell, a class feature, a monster’s Attack, or other Effect.