Feat: Deathblow

Your carefully prepared and placed shot brings instant death to your target. Attempt a Strike with a blowgun or sling using ammunition that you have poisoned with your simple injury poison. If the Strike is successful and you are Hidden from the target, or unnoticed or undetected by them, the target must succeed at a Fortitude save against your class DC or die; this is a death and incapacitation effect. A creature that survives is temporarily immune to the instant death effect of Deathblow for 1 day.