Don't lead with your favorite Pokémon. A random trainer might have a "Wonder Guard" Spiritomb that you simply can't hit.
That is where the comes in. By using a randomizer, you can transform a familiar journey into a chaotic, unpredictable, and thrillingly difficult adventure. What is a Pokémon Alpha Sapphire Randomizer? pokemon alpha sapphire randomizer rom top
If you randomized types, your Fire-type starter might actually be a Fairy/Steel type. Check the summary screen immediately! Don't lead with your favorite Pokémon