Interested in what her classmates, and of course Professor-side-Healer had to say, Luci thought about the question of what benefits poisons bring. Couldn't think of any, just crazy painful effects of many. Shyly, she raised her hand, "Poisons weaken, even kill. So, guessing from the latter, there are specific plants, weeds, animal blood, combinations of them that some have used to make poisons, unknown to common knowledge like ours, even professional..." Sigh. Just a guess.