Candlelight Spells: The Modern Witch's Book of Spellcasting, Feasting, and Healing - Gerina Dunwich 2000

Wart-Curing Spell
Spellcasting

Prick each wart with a pin blackened over the flame from a white candle and place three drops of blood from each wart on an onion. Bury the onion at a crossroad when the moon is in a fire sign (Aries, Leo or Sagittarius). As the onion decays, the warts will disappear.