Perfect Opportunity
Level 13
When you hit a creature with an attack of opportunity, that creature can’t move out of the squares you threaten until the start of its next turn. In addition, when an enemy takes a guarded step (see page 247) out of a square you threaten, you can make an attack of opportunity against it with a –2 penalty to the attack roll. If the target provoked an attack of opportunity by moving, hitting with your attack of opportunity ends the target’s movement immediately, preventing it from carrying out the rest of its movement.