You can use a creature’s diseased state against it.
Prerequisite(s): Base attack bonus +3.
Benefit(s): When you hit a diseased creature with a weapon attack, you deal an additional 1d6 points of damage. This is precision damage. Additionally, you gain a +2 bonus on combat maneuver checks against diseased creatures.
Pathfinder Roleplaying Game Villain Codex © 2016, Paizo Inc.; Authors: Alexander Augunas, Logan Bonner, Paris Crenshaw, Dan Dillon, Crystal Frasier, Amanda Hamon Kunz, Eric Hindley, Mikko Kallio, Dale C. McCoy, Jr., Stephen Radney-MacFarland, Thomas M. Reid, Alistair Rigg, Alex Riggs, Mark Seifter, and Linda Zayas-Palmer.?