The phase of the moon apparently has some effect on its power. It's active on the night of a full moon.
月の 満ち欠けと パワーの 増減が 関係 しているらしく 満月の 夜 活発になる。
Release information
This card was included in the Pokémon GO expansion with artwork by miki kudo, first released in the Japanese subset of the same name. It was reprinted with new artwork by Narumi Sato, alongside a Galarian Gallery holo rare card with artwork by sowsow, in the Japanese VSTAR Universe subset. These prints were later included in the special Crown Zenith expansion.