Somehow, we found ourselves transported to the realm of Lolth (we were lvl 9) and face to face with the Godess herself (not an avatar, the actual Godess). When we realized this, myself and our fighter ran like h*** back to the portal. However, our rogue decided to take a shot at her with a crossbow. His roll: Natural Twenty. He rolled another natural twenty to the confirm crit roll. According to our rules, a nat 20 on a confirm crit roll allows you to make a confirm insti-kill roll. The roll: 14 (adjacent to 20 on a d20). So far, the epicness and the hilarity of this have not been matched.