Fuseli's The Three Witches Black Mug

The Three Witches (1783) by Henry Fuseli (1741 – 1825). Fuseli was a Swiss painter, draughtsman and writer on art who spent much of his life in Britain. Many of his works deal with supernatural subject-matter. The Three Witches or Weird Sisters or Wayward Sisters are characters in William Shakespeare's play Macbeth (c. 1603–1607). Shakespeare's witches are prophets who hail Macbeth, the general, early in the play, and prophecy his ascent to king. Upon killing the king and ascending the throne of Scotland, Macbeth hears them ambiguously prophecy his eventual downfall. The darkly contradictory witches, their "filthy" trappings and supernatural activities, all set an ominous tone for the play. (Wikipedia)