Sickening Spell

You can modify a spell to sicken a creature damaged by the spell. When a creature takes damage from this spell, they become sickened for a number of rounds equal to the original level of the spell. If the spell allows a saving throw, a successful save negates the sickening effect. If the spell does not allow a save, the target can make a Fortitude save to negate the sickening effect. If the spell effect also causes the creature to become sickened, the duration of this me