A step, and she catches the airborne coin in her hands. It feels real enough, even though Gustave couldn't really... "Good luck," she grumbles. Lune recognizes it for charming nonsense, but...Just imagine. All that happened was Gustave with good luck.

She lifts a hand to peer at the coin's orientation.

"Heads," Lune announces, but extending her hand toward him, offering it back. Schools her expression, as though she is delivering an important point. "Although, I could have sworn you said left is unlucky for you."

Checkmate, so-called lucky coin.