Tournament Visitor Shadows

Exploration Stage: Red Rose Cafe
From: Valerie
Description: I'm worried about the card cheaters. I need to find the entrance to the Mystic Tournament as soon as possible. If you need another item from the real world, I can help! I saw a hat floating around here with a blue glow. I wonder if it belongs to one of the players. Can you help?
Completed: I told you. Invisible man hat! This is going to make me a detective's assistant one of these days. But first, let's take this to Martha. We need her to read the hat's aura and find the entrance to the tournament.