I'm soloing an Assassin right now and it says in the manual that the lethality of your posion improves as you go up in levels, but it doesn't say that anywhere in the kit description in the game. Could someone please tell me what is up.

i think its liek the deal with certain spells that get i.e. +1 round/level or maybe extra damage (like the back stab multiplier)
Felix

Remember in BG1, hwo posion woudla ffect, and wait a long time, adn affect, but in Bg2, it goes every two seconds basically

Well, when you are lower in levels think Bg1 poision, higher up, think Bg2 poision

Its a great affect to use when you need that fatal blow on a mpowerful mage, every tiem he casts, he'll be stopped by poision.