Was playing in a free for all campaign, the rest of the players thought that meant first come first serve on magic items, or a necromonger mentality of keep what you kill. Sounded good, everyone but me made good chars, mine was a NE Rogue that by 12th level had a bag of holding type II, +2 Studded with improved shadow and improved silent moves, gloves of dex +3, +2 keen rapier, about 300k gp worth of gems and a cloak of cha +5. The group wanted to investigate a dragon den rumored to be home to Tiamat herself, as at any givin time any on of the five chromatic dragons could be seen entering or exiting the cave. Being the sneakiest in the group, and not wanting to become a snack for one of the many dragons rumored to be inside, I told the group to hang back while I recon the cave (they trusted me finally after more than 10 levels together of them questioning my alignment choice), so I went in alone. None of then even suspected this may be one dragon using illusions to seem like many, but I found the truth soon enough, as the dragon had me against the cavern wall asking if I had any last words. I told the dragon a powerful group of dragon hunters was comming, but I had a plan to help the dragon quid pro quo. I told the dragon of the group waiting outside, and how they planned on preparing to assault, but also that I was a follower of Tiamat and joined them to lead me to the cave so that I may save the dragon or dragons inside. She was doubtful but heard me out, the plan was simple, the dragon would prepare defenses for ice and cast an illusion to appear red, I would tell the "dragon hunters" outside to prepare for a red. Cast ice defend against fire. The dragon asked why she should trust me, I said it's that or kill me now and deal with the other five. The dragon killed all but one of them, I finnished the barbarian with a sneak attack. Yes, I'm that evil, the other players refused to play in any campaign where I was allowed to play evil.