if i use the ally card faramir for a quest i use his "Willpower Strength" plus his action "+1 Willpower" or i must chose one? ...thanks.
Choose 1. If you commit him to the quest with your other characters, he exhausts and contributes his 2 willpower. If you use his action, he exhausts and boosts everyone by 1 willpower. So unless you have a way to ready him, you can only do one of those. If you can ready him, you could use his action ability twice and boost everyone by 2 willpower.