Thanks for playing and the thoughtful response! Haha big fans of Rango on the team. Luck basically functions as armour or overhealth, but we thought "cowboys don't have armour" so we went with luck because cowboys are always like "looks like yer outta luck, pardner" before they shoot the guy. So they're not really "blocking" per se but "luckily" avoid real damage. We definitely intend to communicate that better!