Player > Feats > Adaptive Fighting
You can adjust your fighting style to match specific conditions during combat.
Three or more combat feats.
Select three combat feats that you do not have but whose prerequisites you meet. Once per day as a move action, you can gain the benefit of one of these feats for 1 minute. Each time you gain a level, you can replace one of these three selected feats with a different feat that you don't have but meet the prerequisites for.