It's a fantasy role-playing game.

DM: You are Vex Vex'ahlia, a half-elf ranger . You are the member of the famous group of adventurers. Previously, To avoid showing his face to the Briarwoods, Percy disguises himself as Vax, and Scanlan casts Invisibility on the real Vax.
DM: As you approach, you make yourselves known. The guards lead you to the front area of the palace. The sun's just starting to hit the distant side of the water of the Ozmit Sea to the west of Emon. As you guys finish talking to the front guard that you've arrived, Seeker Asum steps out of the front of the palace and sees you. "Very good. Glad you could make it. Please enter. I will wish to speak with you briefly before the event this evening."
Player: Of course.
DM: "Are you missing anyone?"
Player: Oh, yes. Percy wasn't feeling very well. He ended up staying home.
DM: Make a deception check.
Player: 11.
DM: "Very well. That's unfortunate. His skills could have been of use to me. Come inside."
