Pack Attack

Combat Teamwork

You are skilled at surrounding your enemies.

Prerequisite: Base attack bonus +1.

Benefit: When you are adjacent to an ally with this feat, the first time you melee attack an opponent, you can spend an immediate action to take a 5-foot step, even if you have otherwise moved this round.

Normal: You can take a 5-foot step only if you have not otherwise moved in a round.

Source: Ultimate Combat