On the front of the above postcard is TAHNOK-KAL emerging from the Bohrok nest, the caption “Bohrok-Kal… six reasons to hide”, and in the lower-left corner: a mysterious question mark, silver XA, and the caption “THE POWER OF SILVER”. On the back is this message:

“The Toa Nuva emerged from their battle with the Bahrag Twins stronger than ever — or so they thought. However, from beneath the surface of Mata Nui, a new threat has sprung forth. The Bohrok-Kal, an elite squad of Bohrok, are storming the island of Mata Nui with one simple mission: Defeat the Toa Nuva to free Cahdok and Gahdok. The Bohrok-Kal are powerful, clever and cunning; as formidable as any foe the Toa Nuva have encountered.”

And then in the Matoran script it says: “SEARCH FOR THE SILVER”.

My thanks go to Greg Farshtey, BIONICLE™ comics author, for sending us the postcard. He signed it, and added this note: “Stay tuned!”