Originally Posted by Mann Manor, TF2 wiki

During the round a gift will appear randomly on the map, whatever player finds it will receive a class-based paper mask.

The "Horseless Headless Horseman" will spawn at a random capture point during the round. The "Horseless Headless Horseman" will chase and attack one player who is "It". Another player becomes "It" when the other dies. The player who is "It" can tag another player with melee attack to make them become "It".