The melee combat rules assume that combatants are actively avoiding attacks. A player doesn't have to declare anything special for his or her character to be on the defensive. Sometimes, however, a combatant in a melee lets his or her guard down, and doesn't maintain a defensive posture as usual. In this case, combatants near him or her can take advantage of this lapse in defense to attack for free. These attacks are called attacks of opportunity.
Weapon Type
A character can use a melee weapon to make attacks of opportunity whenever the conditions for such an attack are met (see Provoking an Attack of Opportunity, below). In addition, a character can make attacks of opportunity with unarmed attacks if the character's unarmed attacks count as armed (see "Armed" Unarmed Attacks).
Threatened Squares
A character threatens the squares into which he or she can make a melee attack, even when it is not the character's action. Generally, that's all squares adjacent to the character's position. An enemy that takes certain actions while in a threatened square provokes an attack of opportunity from the character. A character can only make attacks of opportunity with melee weapons, never with ranged weapons.
Provoking an Attack of Opportunity
Two actions can provoke attacks of opportunity: moving out of a threatened square, and performing an action within a threatened square that distracts from defending and lets the character's guard down.
Moving out of a Threatened Square: When a character moves out of a threatened square, that character generally provokes an attack of opportunity. There are two important exceptions, however.
A character doesn't provoke an attack of opportunity if all he or she moves is a 5-foot step, or if the character withdraws.
If the character doesn't start in a threatened square, but moves into one, the character has to stop there, or else he or she provokes an attack of opportunity as he or she leaves that square.
Performing an Action that Distracts the Character: Some actions, when performed in a threatened square, provoke attacks of opportunity because they make a character divert his or her attention from the fight at hand. Using a ranged weapon, in particular, provokes attacks of opportunity. Table: Actions in Combat notes many additional actions that provoke attacks of opportunity.
Making an Attack of Opportunity
An attack of opportunity is a single melee attack, and a character may make a number of attacks of opportunity per round equal to their Dexterity modifier (minimum 1).. A character does not have to make an attack of opportunity if he or she doesn't want to.
Actions That Provoke an Attack of Opportunity
Attack Actions | Attack of Opportunity |
---|---|
Attack (melee) | No |
Attack (ranged) | Yes |
Attack (unarmed) | Yes |
Attack (aid another) | No |
Bull rush (attack) | No |
Escape a grapple | No |
Feint (see the Bluff skill) | No |
Ready (triggers an attack action) | No |
Make a dying character stable | Yes |
Attack a weapon | Yes |
Attack an object | Maybe |
Start/complete full-round action | Varies |
Total defense | No |
Use a skill that takes an attack action | Usually |
Move Actions | Attack of Opportunity |
Move your speed | Yes |
Use a piece of equipment | No |
Climb (one-quarter speed) | No |
Climb, accelerated (one-half speed) | No |
Crawl | No |
Draw a weapon | No |
Holster a weapon | Yes |
Move a heavy object | Yes |
Open a door | No |
Pick up an object | Yes |
Retrieve a stored object | Yes |
Stand up from prone, sitting, or kneeling | No |
Swim | No |
Use a skill that takes a move action | Usually |
Full-Round Actions | Attack of Opportunity |
Bull rush (charge) | No |
Charge | No |
Coup de grace | Yes |
Full attack | No |
Overrun (charge) | No |
Run | Yes |
Withdraw | No |
Extinguish flames | No |
Use a skill that takes a full round | Usually |
Free Actions | Attack of Opportunity |
Drop an object | No |
Drop to prone, sitting, or kneeling | No |
Speak | No |
Action Type Varies | Attack of Opportunity |
Disarm | Yes |
Grapple | Yes |
Load a weapon | Yes |
Trip an opponent | No |
Use a feat | Varies |
No Action | Attack of Opportunity |
Delay | No |
5-foot step | No |