Day 9: Do you use your Master Ball?
I didn't used to, but now I use them for the cover legendary. I'm thinking I should start using them for the "third" legend(Rayquaza, Giratina, Kyurem, Zygarde, etc), but I still end up using Ultra Balls on these.
Though I'd never do what my brother did, and use a Master Ball on a Grimer. Haha