Armor was similar to Health but you would still die if you had Armor but no Health. When your Legend took damage in Battle, damage was subtracted from Armor before any remaining damage was subtracted from Health. However, there ware some cards, particularly The Raptor Cards, which interacted with Armor in a useful way. Gaining Armor could also sometimes be better than gaining Health because Health could only go up to a maximum of 30, while Armor had no known limit.