Always Ready (3.5e Feat)
From D&D Wiki
Always Ready [General]
When it's time to fight you can always draw upon your full potential.
Prerequisite: Ability that can be used two times per day or more often.
Benefit: Choose one of your abilities that is limited to a number of uses per day and that you can use at least two times per day. In every encounter, you gain a free use of this ability that does not count against your daily limit.