Players clash steel and spill blood for the chance to gain a Favor Card. On your turn, place a Viking Card facedown as the rightmost card in your row. If you are starting the battle (no other players have a facedown card), you select one of the Favor Cards above or below the Map from either end of either row (this typically means there are 4 options to choose from).
Place the Favor Card into the slot on the left edge of the Era Mat. Other players may now join the battle - on their turn, they may also play a Viking Card from their hand facedown. However they do not choose a Favor Card, as they are fighting for your chosen Favor Card.