Ratfolk item crafters often make magic weapons with the following weapon special abilities.
Aura: strong evocationCLl: 12th
Price: +1 bonus
Weight: &mdash
This ability can be placed only on a corrosive or corrosive burst weapon. When the wielder of a catalytic weapon hits a creature, the weapon triggers a devastating chemical reaction that burns the struck creature. The creature struck must succeed at a DC 15 Fortitude save, or take 1d6 points of acid damage at the start of its turn for 1d4 rounds. Successive hits with the catalytic weapon increase the duration but don't add to the damage. The creature can attempt to neutralize the reaction as a full-round action as if it were on fire (including bonuses for dropping and rolling on the ground or jumping into water). Anyone who hits a creature subject to this chemical reaction with a natural weapon or unarmed strike takes 1d6 points of acid damage.
Aura: faint necromancyCLl: 5th
Price: +1 bonus
Weight: &mdash
A virulent weapon magically intensifies any poison it delivers. The saving throw DC of any poison applied to either a virulent weapon or any ammunition fired from it increases by a number equal to the weapon's enhancement bonus. The duration of the poison increases by a number of rounds equal to the virulent weapon's enhancement bonus.