Only breeding Pokémon from different regions and/or having the Shiny Charm will increase the chances of hatching a Shiny.
The Destiny Knot can be bought at the Battle Royale Dome for 48 BP. You can also find it via the Pickup ability.
And if you want a Mimikyu with an attack boosting nature, then find another Mimikyu, or find a Ditto, with an Adamant nature and have it hold an Everstone during breeding. The Pokémon holding the Everstone will always pass down its nature to the offspring.
The Destiny Knot can be bought at the Battle Royale Dome for 48 BP. You can also find it via the Pickup ability.
And if you want a Mimikyu with an attack boosting nature, then find another Mimikyu, or find a Ditto, with an Adamant nature and have it hold an Everstone during breeding. The Pokémon holding the Everstone will always pass down its nature to the offspring.
