Talk:"Great Ordinary", Tsugumi Hazawa/@comment-34748238-20191014083010/@comment-33052195-20191014083606

Nothing happens. Being unable to be nullified doesn't suddenly reverse effect nullification, it just means it isn't affected by it. So theoretically speaking, if the monster who had protection from effect nullification lost said protection (E.g. Protection from effect nullification came from a set spell, which was removed from the field somehow), then this card would immediately nullify the monster's effects since her effect is continuously active.