By applying the patch, the Pokedex transforms from a checklist of impossibilities into a tangible goal. This is particularly relevant for the "Sevii Islands" post-game content in FireRed . The post-game is designed to allow the player to capture Johto Pokémon to complete the National Dex. However, without the ability to trade-evolve Pokémon like Steelix or Scizor, the National Dex remains forever incomplete.