Complex sentence: In some aspects of Paganism, particularly amongst Wiccans, the black moon is considered to be a special time when any rituals, spells, or other "workings" are considered to be more "powerful" and "effective".
Split into simpler sentences: In some aspects of Paganism, particularly amongst Wiccans, it is considered to be a special time. Where any rituals, spells, or other "workings" are considered to be more "powerful" and "effective".