If you have a bow or spell that has Weakness to Fire 100% for 10 seconds and Weakness to Magic for 10 sec, and you fire first shot with a bow that has fire damage poison for x seconds, will the damage multiply each second that damage is applied? Say the poison is 24 fire damage for 20 seconds. And you use a bow with those initial weaknesses. So after those weaknesses take effect on that first shot with the poison applied, will the damage output increase each second? I'm going to do some testing on this, because logic (at least my own) would say it does.
Oh, and I'll probably try that bow and add a weakness to poison as well. For some reason I'm skeptical this will work.