Since Potnia is a Bronze Age goddess- a time when the role of priest(ess) and magician was even more blurred than with Iron Age divinities- Magical Side-Effects occur every time her priestesses cast a spell, not just with healing magic. Roll 1d12.
1. A Sacrifice! The Great Goddess gives and takes away. Depending on the level of the spell, either goods worth 1d20 gold pieces (1st-2nd level), an animal (3rd-4th level), a slave, criminal, or even a normal person (5th-6th level) must be given to Potnia (killed) for the spell to work, with the highest level ones (7th level spells) requiring the person be also given to the priestess’s belly. Woe unto those that she might have over for dinner in that case!
2-3. Worship of the Land. Many natural places show the many sides of Potnia. The spell requires that the priestess be at or at least be in view of the sea, mountains, caves, or a labyrinth. Using only representations of such places (frescoes, carvings, symbols, etc.) reduces all the spell’s effects by 25%.
4-5. Civilized Magic. No shirt? Great service! Or at least, bare one’s breasts! Any recipients of a beneficial spell with this side-effect must be dressed (or undressed) as such. On the other hand, those who would receive a harmful spell must be wearing such barbaric garb (i.e. shirts or other chest coverings), much as with the priestess’s Turn ability. Otherwise, all the spell’s effects are reduced by 25%.
6-8. Snake and Bull. The magic now requires animals sacred to the Great Goddess: whether snakes or bulls. Symbolic forms will do, including a labrys, though having the actual animal present or even creatures that are at least part snake or bull (e.g. gorgons or minotaurs), grants a 50% bonus.
9-12. Potency of Potnia: The recipient is either blessed or cursed by the spell, depending on whether it was a helpful or harmful one, automatically receiving its full effects (a save still negates, if applicable). What is more, those so affected and who would honor Potnia’s tenets gain a +1 to all rolls for the next 1d6 rounds, while those who would be so abominable as to cover their chest would receive the opposite!
Next week: Priestesses of Potnia, Part III!