You gain all the technological knowledge of the world of Pokémon, a society that has thrived on capturing monsters and keeping them in Pokéballs. You gain the ability to make your own Pokémon through genetic engineering and the various other technologies seen in the Pokémon world, like cloning, Pokéballs (devices that can be used to store massive amounts of data), computers that can turn physical mass into computer code, devices to restore fossils, teleportation, holographic display, giant mechs, forced evolution and so much more.
As a bonus, you become great at training Pokémon and other animals as well as a great tactician, able to think slightly faster in the moment.