Next time Reira slides his card into a door to enter the Arcade there will be small sparks and a little smoke surrounding it, but strangely he will feel nothing except that the card is warmer. When he pulls the card out he will note there is now a symbol of the suit of clubs embossed on the back.

For a short time "sorry i forgot :)" will be visible when the card catches the light. Once it has cooled the text will fade permanently from it.