Experts and in subtlety and poison{{Fn|1b}}, its members wield toxins potent enough to quickly dispatch even the toughest of prey. Their rigorously trained and genetically-enhanced Assassins were selected from the finest alchemists who could create that were capable of creating exotic concoctions that could cause death without leaving any a metabolic trace. Its members They were said to have had the greatest level of success during the [[Horus Heresy]].{{Fn|4}}