Using A Player Card

Once you're in the position where you have earned a player card, the item will be added to your backpack just like a normal Dota 2 item.Hovering over the card will display all of the details regarding that player, his position in the team, favoured heroes and also his featured match id.From the backpack you can right click on the card and will be presented with a few options.The "Watch the replay" option will take you to that player's featured match in which they performed exceptionally well and will download the replay for you to watch.The other option which is the most important one is the "Use on Compendium" option which allows you to use up the player card and stamp it into your collection.Using this option will present you with a dialog warning you that the card will be destroyed upon use. The player cards are a one time use and once stamped into your Compendium they can not be retrieved.Once the player card has been stamped into your Compendium the team profile page will be updated and that player's image will be now displayed in full colour, representing the fact that you have stamped/collected that player.