As an action, all nonmagical food and drink within a sphere centered on a point of your choice within 5 meters is putrefied. If a creature consumes the putrefied food or water it must make a Fortitude saving throw.
On a failure, it takes 1d8 poison damage and is poisoned for 1 hour.
On a critical failure, it takes twice as much damage.
On a success, it takes half as much damage.
On a critical success, it takes no damage.
Every 10 minutes, a poisoned creature can repeat the saving throw, ending the effect on itself on a success.
You can increase the damage by 1d8 for each additional mana expended.