Curse of da Bad Moon is a magical vortex spell that uses the small round template. Once the template is placed, the caster nominates the direction in which it will move. Roll 4D6 to determine how many inches the template moves. In subsequent turns the template will move 3D6" in a random direction. Any model under or passed over by the template is cursed, and must pass a characteristic test or take a wound, with no armour save allowed. The type of characteristic test is determined by rolling on the following chart. Roll once each Magic phase, just before moving the template, and apply the result to all models affected by the curse that Magic phase.

By increasing the casting value of the spell to 25+, the Shaman can boost the Curse of da Bad Moon so that it uses the large round template instead. Additionally, before the template moves each turn, the Shaman can choose the type of characteristic test that the victims must take instead of rolling on the table.