D&Dtools

Benefit

As a standard action, you can spend an arcane spell slot to impose a penalty on the next Will save made by one living creature within 30 feet. The penalty is equal to the spell slot's level and lasts until the creature attempts a Will save against an effect that is not harmless or until the end of your next turn, whichever comes first. Multiple uses of this ability don't stack. This is a mind-affecting enchantment (compulsion).