- You exist as you are, no special abilities or powers, just your knowledge of the genre and source material. If there's an in-universe means of gaining other-worldly power it must be 100% effective in-universe or else on you it is 100% ineffective.
- If the villain speaks a different language then he is fluent in your language but only when speaking with you. He freely translates for you and never gets annoyed with a translation request or attempts to learn his language.
- The villain trusts you quite a bit, but not unquestioningly. If you recommend something insane (in his eyes) he will call you out for it. Being able to explain yourself will go a long way. Too many mistakes and you will loose his trust.
- Helping the villain win means you either get to go home, or he will grant you one big request within his power and within his personality. In universe means of gaining supernatural powers work on you after you help the villain win.
- You're allowed to bring a small notebook, but nothing else. Your clothing changes to that fitting of the villain's top adviser.
- If the villain wins in the original story, you are the adviser/friend of the hero and you need to help the hero win.