I remember now. How could I forget that I learned about 7777 while fighting Emerald? It's been way too long since I've replayed VII. The first time I beat Emerald was by chance. I was so underleveled and I didn't have my materia set up correctly or anything. I hadn't saved for like two hours either, so if I hadn't gotten lucky 7s I would have died and lost all that work and totally /ragequit.