The Pokemon Company has announced that all Pokemon Centers and Pokemon Stores in Japan will be distributing Rotom Power items to trainers playing Pokemon Ultra Sun and Ultra Moon.
A random Rotom Power item will be given to trainers who visit the Pokemon Center or Store (up to one per day). The receivable Rotom Powers are “Egg Hatching”, “Discount”, “Money”, “Experience”, “Discovery”, “Assistance”, and “Catching”.
Distribution begins on November 17, 2017. At the time of writing there’s no end date to the distribution.