Combat Strike( Player's Handbook II, p. 87)
[Combat Form, Fighter Bonus Feat]
Your intense, focused state allows you to see the one critical moment in a battle when you hang suspended between victory and defeat. By pouring the energy required to maintain your focus into your assault, you batter through your foe's defenses.
Combat Focus (PH2) , WIS 13, any two other combat form feats, base attack bonus +15,
If you choose to end your combat focus as a swift action, you gain a bonus on attack rolls and damage rolls equal to your total number of combat form feats for the rest of your current turn. You immediately lose all BENEFITS: of combat form feats that affect you only while you are maintaining your combat focus.
A fighter can select Combat Strike as one of his fighter bonus feats.