When a unit with the Duelist keyword makes a Melee attack, if it spends 1 or more Aim tokens during the Reroll Attack Dice step, the Attack Pool gains the Pierce 1 weapon keyword. While a unit with the Duelist keyword defends against a Melee attack, if it spends at least 1 Dodge token during the Apply Dodge and Cover step, it gains the Immune: Pierce keyword.A unit with the Duelist keyword gets these effects in addition to the normal effects of spending Aim or Dodge tokens. 