Instead of rolling off to determine which player takes the first turn, you may challenge your opponent to a Warrior's Duel. If your opponent accepts, both players choose a single unit champion with a Wounds characteristic of 1 whose troop type is infantry or cavalry from within their army to fight in a Warrior's Duel.

The chosen combatants then fight as if engaged in a challenge, fighting as many rounds of combat as necessary to determine a victor. Once a victor has been determined, that model's controlling player takes the first turn. If both champions are slain, the players must roll off as normal.

If the challenge is declined, the Wolves of the Sea army counts as having won the roll-off to determine which player takes the first turn.

Note that, should a Bretonnian army accept the challenge, it counts as having prayed for the Blessings of the Lady. Should a Bretonnian army decline the challenge, it cannot pray for the Blessing of the Lady and any units that would usually begin the game with it, such as models with the Grail Vow, automatically lose it.