Prerequisites: Alchemist 6, Feral Mutagen discovery.
Benefit: When using a mutagen, your natural weapons ooze a strong mutagenic toxin which can be delivered by your natural attack. Choose a natural weapon with either slashing or piercing damage. When you make a successful attack with this natural weapon, the opponent must make a Fortitude save or be poisoned. This discovery may be selected more than once, but each time it is selected it applies to a different natural attack.