Something we have had a couple of times but never could get a straight answer for. One of our PC is invisible and is trying to to sneak up next to another PC nex? to an NPC, they seen him go invisible and was technically hostile/aggressive. Both the PC and NPC fail their perception checks to see the invisible PC as he approaches them. So the non-invisible PC takes a readied action to strike at the other PC should he come visible. After two round the invisible PC attempts to cut off the hand of a dead body that the second PC is carrying, the corpse had a ring on that he needed for a mercenary contract. The non-invisible PC was also contracted to retrieve the body for a reason we never found out. Now the issue we ran into was would cutting off the hand of a corpse reveal the first PC and by doing so would the second PC get his readied action to strike as he is taking the hand. What the group decided on was to allow the first PC to sever the hand but he took a massive blow from the second PC in the process. If more information is required I can add more as needed.