Is arsenic, or arsenic alloy (arsenic + lead), deadly and can it be used for weapons in medieval / classical era?
If a leader of assassins' guild wants a special (reusable) toxic weapon (from dagger to the size of small sword), Is it a good idea to make it from arsenic? (what about arrow heads from arsenic?)
I know that arsenic was used to make bronze, but from what I know it wasn't significantly more poisonous than other copper alloys. (the copper oxides would probably do better job at that point)
Lets say that there is a lot of pure arsenic, enough to make an entire short sword. Could people at that time make a short sword out of it? And would it be any good? Would it keep its shape?
And would adding the lead help in any way (could it make a similar reaction as copper and lead and copper and arsenic do with bronze?), or is it better to have just pure arsenic?
I know that there are several questions now, but I think they are all just clues pointing at the answer for my original question. And you don't have to answer these.