Focus

The ranger gets focus, full, with rapid shot at level 12, and keeps it for good. A shot you loose while you hold 2 focus spends them and takes 10 % less time. A volley (level 50) costs 6. Focus comes back while you act, but not while you rest.

The talent on it

Steady hand (Weaponcraft; ranger, level 12): focus comes back half again as fast, a point every 4 seconds instead of every 6. It still does not come back while you rest.

See also: Resources, Ranged combat, and Companions.