This designation does not restrict characters of other classes from selecting these feats, assuming that they meet the prerequisites.Critical feats modify the effects of a critical hit by inflicting an additional condition on the victim of the critical hit.A character can't use a feat if he loses a prerequisite, but he does not lose the feat itself.If, at a later time, he regains the lost prerequisite, he immediately regains full use of the feat that prerequisite enables.By selecting feats, you can customize and adapt your character to be uniquely yours. Your character must have the indicated ability score, class feature, feat, skill, base attack bonus, or other quality designated in order to select or use that feat.A character can gain a feat at the same level at which he gains the prerequisite.Some abilities are not tied to your race, class, or skill—things like particularly quick reflexes that allow you to react to danger more swiftly, the ability to craft magic items, the training to deliver powerful strikes with melee weapons, or the knack for deflecting arrows fired at you. While some feats are more useful to certain types of characters than others, and many of them have special prerequisites that must be met before they are selected, as a general rule feats represent abilities outside of the normal scope of your character's race and class.
A metamagic feat lets a spellcaster prepare and cast a spell with greater effect, albeit as if the spell were of a higher spell level than it actually is.Any feat designated as a combat feat can be selected as a fighter's bonus feat.Some feats are general, meaning that no special rules govern them as a group.Others are item creation feats, which allow characters to create magic items of all sorts.
Characters without the Critical Mastery feat can only apply the effects of one critical feat to an individual critical hit.Characters with multiple critical feats can decide which feat to apply after the critical hit has been confirmed.