The American Red Cross is facing a severe shortage of type O blood and urgently needs donors. They have partnered with HBO in and the Red Cross in recognition of the final season of Game of Thrones with a bleed ForTheThrone blood drive in March.

The largest blood donation promotional effort by an entertainment company in Red Cross history includes six days of coordinated giving March 7-12, during which donors will receive exclusive Game of Thrones swag including a T-shirt, stickers to unlock a unique Snapchat filter and other items, while supplies last. All Red Cross blood or platelet donors March 7 through March 17 will be entered for a chance to win one of five trips to the GoT final season premiere. Terms and conditions apply; visit RedCrossBlood.org/HBOGameofThrones.

Donors may make an appointment to donate blood by downloading the free American Red Cross Blood Donor App, visiting RedCrossBlood.org or calling 1-800-RED CROSS (1-800-733-2767).