Cold Dead Hands
In the game, this card is the "Five of Diamonds". It can be found hanging out of a helmet behind the bar in the first building of Vendetta.
Mission: Vendetta (Five of Diamonds)
Effect: Enemies take their weapons with them to the grave
Location: After the sniper section at the first part of the mission, Reznov will lead you through a building. Follow the bar around to the end to find the card.