The door slowly swings open when you knock, and fog spills out from it. A voice can be heard in the dark.
"Greetings, weary traveler. Let us see what the Fates have in store for you on this night...
There is the sound of dice being rolled, and a small pause before a laugh is heard.
Lights slowly brighten inside, and in the green glow you can see who's been talking to you, now illuminated by pumpkin torches on both sides.
"Congratulations! Enjoy your treat! Lady Luck was on your side today."
And with the treat given, the door slowly closed, seemingly on its own.