Injection Expert
Source
Character Operations Manual pg. 40
You are proficient with weapons with the injection weapon special property, as long as the weapon has not gained that weapon special property through a weapon fusion, spell, class feature, or similar ability or effect. At 2nd level, you gain a +1 bonus to attack rolls with these weapons. At 9th level, that bonus increases to +2, and at 18th level it increases to +3. When you hit an ally with such a weapon, you can avoid dealing damage to that ally, while still affecting the ally with the biohack booster or inhibitor, drug, medicinal compound, poison, serum, or other substance that was loaded into the injection weapon. When you fire a weapon with the injection special property and you have multiple types of ammunition loaded into the weapon, you choose which type of ammunition you fire when you attempt the attack.
ID
120fc21438c0c764d751dec2
Effects
Level 1
append injection to character.proficiency.weapon;
Level 2
bonus pick [2:1,9:2,18:3] at character.biohacker.level to character.attack.injection as misc;