DIRTY TRICK TRAP* (EX OR SU)
Effect If the triggering creature fails its saving throw against the trap or is struck by the trap’s attack, the trap also attempts a dirty trick combat maneuver against the triggering
creature. The type of dirty trick is chosen when the trap is created, and if it isn’t possible or isn’t applicable to the triggering creature, the combat maneuver is wasted. The trap’s CMB for the dirty trick is equal to the ranger’s level + his Wisdom modifier.