So yeah.. amethyst reverie is only supposed to work for opposing abilities. But it also has the same effect for whomever controls it. for example if I super nova on my turn with amethyst my hero and allies receive no damage. It also prevents nishavens ability from damaging her own board.. technically it is a 5 cost ability.. Iím not sure if itís intended to work for hero abilities as well? 🤷*♂️