To start off, I meant "New", not "Bew".

Personally, I would like to see an alchemical effect that makes an enemy fall unconcious after a few seconds. This could be applied to an arrow or a dagger, and could be easily used to incapacitate an enemy without the use of lethal force.

Also, a poison that commands creatures or people would be pretty useful. Just use it on a bow, hit a marauder from 100 yards away, and watch him attack his friends.

Any other suggestions?

I'm sure there will be poisons in the game...but why don't you just change the title? I'm pretty sure you can edit it.