454.2.a. This layer deals with effects that grant, remove, or replace the abilities or rules text of Game Objects . Keywords Passive Abilities Appending rules text Removing rules text Duplicating Rules Text from one Game Object to another
454.2.b. Effects for this layer can be identiļ¬ed by the phrase "become(s)," "give," "lose(s)," "have," "has," "is," or "are" in the text. Example: A permanent has the ability "Other friendly units have [Vision]." Other friendly units gain the Vision keyword in this layer.