Mew and Phione are only available once some requirements are filled. Once 250 Pokémon are present on the ranch, the ranch will expand and jump to a new level. When this level is obtained, Hayley will add a new Pokémon to the "Wanted" board, Leafeon. When Leafeon is brought to the ranch, she will offer to trade it for her Phione. When 999 Pokémon are present, the ranch will expand and jump to level 25, the maximum level. Once this level is obtained, a new wanted Pokémon will be added. Hayley is now asking for any Pokémon egg. When the egg is brought, she will offer to trade it for her Mew.