The Pokémon Company has revealed that players will have the chance to deepen their bond with the Rotom Dex in Pokémon Ultra Sun and Pokémon Ultra Moon.

The Rotom Dex was introduced in Pokémon Sun and Pokémon Moon, a Pokédex that records information about the Pokémon that you encounter and catch on your adventures with a Rotom inside.

Now, in Pokémon Ultra Sun and Pokémon Ultra Moon, players will grow closer to Rotom the more that they communicate with it. That will see it help you more, and its personality will change based on how you interact with it.

If players become close enough with Rotom, it will use a special power called Rotom’s Z-Power. This will let you use a second Z-Move in battle, with players normally limited to only using one Z-Move per battle.

Pokémon Ultra Sun and Pokémon Ultra Moon will release exclusively for Nintendo 3DS worldwide on November 17th.