You conjure a toxin so potent it continues to spread even after it kills the poisoned. A 10 ft. radius zone of corrupted land appears and those within the area of effect must make a Fortitude save vs poison or take 1d6 points of damage per caster level (max 20d6) and 1d6 points of constitution damage. On a successful save they only take half and no ability damage. Regardless of whether or not the targets made their save, each round after, the targets continue to take another 3d6 points of poison damage, with no way to naturally stop the decay. Only magical applications to remove the poison (such as by neutralize poison or heal) prevent additional damage.