Beckett Message Boards

I have two 2011 topps triple threads relics of Richard Seymour. At the bottom of the card it says (look for two other cards in this set to create your own triple threads unity triple relic card) does anyone know what this means and how I do it?

There are three different backgrounds if you get all three cards they have a full picture of the stadium in the background kinda like a puzzle

(03-30-2012, 04:26 PM)biglump007 Wrote: [ -> ]There are three different backgrounds if you get all three cards they have a full picture of the stadium in the background kinda like a puzzle

Thank you