If it relates directly to their unchanging physical state, it won't be impacted by the frequency mechanic. For example, a ghost won't suddenly be unable to walk through walls, but they'll lose their ability to curse someone because it's not directly related to their physical being. A lizard person will keep their long tongue that can shoot out six feet, people with wings will keep them even though it grants them the ability to fly. This type of ability applies more to humanization and not to their extra abilities, magic or powers.

Hope that isn't too confusing! If you'd like more distinction or have questions about specific characters, feel free to ask!