
Lord Pendragon |

An attack of opportunity is a single melee attack, and most characters can only make one per round. You don't have to make an attack of opportunity if you don't want to. You make your attack of opportunity at your normal attack bonus, even if you've already attacked in the round.
An attack of opportunity "interrupts" the normal flow of actions in the round. If an attack of opportunity is provoked, immediately resolve the attack of opportunity, then continue with the next character's turn (or complete the current turn, if the attack of opportunity was provoked in the midst of a character's turn).
When performing a combat maneuver, you must use an action appropriate to the maneuver you are attempting to perform. While many combat maneuvers can be performed as part of an attack action, full-attack action, or attack of opportunity (in place of a melee attack), others require a specific action.
An attack of opportunity provides you with a single melee attack. Combat Maneuvers (unless otherwise specified) can replace a single melee attack. Therefore, unless noted in a specific maneuver, you can indeed perform a combat maneuver in place of the single melee attack granted by an AoO.

Grick |

Specifically:
You may use Bull Rush
Bull Rush: "You can make a bull rush as a standard action or as part of a charge, in place of the melee attack."
"the" melee attack is referring to the melee attack made as part of a charge. If you're not charging, then it's a standard action. You cannot bull rush as an AoO.

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Dust Raven wrote:Now I'm trying to imagine how Bull Rush would look as an AoO. Might be a fun tactic for those with reach weapon to keep opponents at the proper range...Darn. :(Trip is your friend. :)
I've been thinking of rolling up a reach weapon specialist type for PFS, I might end up putting this into practice.

RumpinRufus |

RumpinRufus wrote:Specifically:
You may use Bull Rush
Bull Rush: "You can make a bull rush as a standard action or as part of a charge, in place of the melee attack."
"the" melee attack is referring to the melee attack made as part of a charge. If you're not charging, then it's a standard action. You cannot bull rush as an AoO.
D'oh, that's what I get for doing Ctrl+F on "in place of".
I edited my original post.

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Grick wrote:RumpinRufus wrote:Specifically:
You may use Bull Rush
Bull Rush: "You can make a bull rush as a standard action or as part of a charge, in place of the melee attack."
"the" melee attack is referring to the melee attack made as part of a charge. If you're not charging, then it's a standard action. You cannot bull rush as an AoO.
D'oh, that's what I get for doing Ctrl+F on "in place of".
I edited my original post.
So easy for technology to cause errors (albeit indirectly). This is why I never use HeroLab and make all my characters by hand. Ah, well. Better not derail too much.

Quantum Steve |

Can you use sunder with an AoO? Has the debate been settled by the Devs?
You can attempt to sunder an item held or worn by your opponent as part of an attack action in place of a melee attack. If you do not have the Improved Sunder feat, or a similar ability, attempting to sunder an item provokes an attack of opportunity from the target of your maneuver.
As written, sunder can only be used in place of the melee attack taken as part of the attack action, not just any old melee attack.

redliska |

The debate was settled. In FAQ it reads.
"Can I make multiple sunder attempts in one round as part of a full-attack action? The sunder text says that I can make sunder attempts in place of melee attacks in an attack action, which is not technically a full-attack action.
Yes you can. The text is a little unclear here. Instead of saying "as part of an attack action in place of a melee attack", the text should read "in place of a melee attack", which would allow you to make multiple attempts in one round, or even make a sunder attempt as an attack of opportunity."
—Jason Bulmahn, 11/30/12

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RumpinRufus wrote:However, you may not use Trip as an Attack of Opportunity when an opponent stands up from prone.Specifically:
You may use Disarm, Sunder, or Trip as an attack of opportunity.
That's when you Disarm him.
Then you Trip him when he reaches down to pick up his weapon.
Bwhahaha.
Is the 15' thing, as part of Greater Disarm, required? Or can you just have him drop his weapon instead of bouncing it 15'?

Isil-zha |
sieylianna wrote:Out of curiosity, where is this stated? I can't find it in the CRB.RumpinRufus wrote:However, you may not use Trip as an Attack of Opportunity when an opponent stands up from prone.Specifically:
You may use Disarm, Sunder, or Trip as an attack of opportunity.
when standing up the AoO is provoked at the beginning of the action while the creature is still prone, you cannot trip a prone creature (but you get the usual modifiers for attacking a prone opponent)

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Is the 15' thing, as part of Greater Disarm, required? Or can you just have him drop his weapon instead of bouncing it 15'?
RAW... forget RAW. No, they just didn't say "up to 15' at the disarmer's choice" to save on ink. I'm pretty sure if you disarmed someone 10 feet away from a cliff, you could choose to have the weapon land on the edge of the cliff instead of over it. Or at their feet/adjacent square to encourage them to pick it up and provoke an AoO where they're standing.

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sieylianna wrote:RumpinRufus wrote:However, you may not use Trip as an Attack of Opportunity when an opponent stands up from prone.Specifically:
You may use Disarm, Sunder, or Trip as an attack of opportunity.
That's when you Disarm him.
Then you Trip him when he reaches down to pick up his weapon.
That is nasty!

TGMaxMaxer |
There are also the Quick (Combat maneuver here) feats from ult combat, which allow you to make most of them in place of any attack.
Felling Smash lets you do a trip as a free action on any successful Power Attack that lands. (pauses to let you ponder the Power Attacking Great Cleave/Whirlwind Attack in conjunction with this, preferably on an enlarged polearm master with haft strike from 5ft to 20ft.)
Shield Slam lets you make a bullrush on any shield bash attack.
Several archetypes let you make certain maneuvers on any attack.
Notably the Skulking Slayer (H-orc rogue) that gets dirty trick and steal anytime you could sneak.
There are several others, I use them for PFS a lot so that less optimized players can feel like they can do damage after I've debuffed the enemies instead of just doing massive damage all the time.

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Sorry man, a few of these are not quite right...
There are also the Quick (Combat maneuver here) feats from ult combat, which allow you to make most of them in place of any attack.
The "Quick" Combat Maneuver Feats do not allow the maneuver to be used with an AOO. The descriptions state that they must be used on the character's turn. AOO occur out of turn.
Felling Smash lets you do a trip as a free action on any successful Power Attack that lands.
This cannot also not be used as the bonus trip maneuver requires that a swift action be used...and swift actions also can only be used on the character's turn.
I can't find any problems with the other examples you noted.

RumpinRufus |

RumpinRufus wrote:However, you may not use Trip as an Attack of Opportunity when an opponent stands up from prone.Specifically:
You may use Disarm, Sunder, or Trip as an attack of opportunity.
True. On a related note, I just realized that this combo works:
Rogue (Thug archetype), Enforcer (feat), Improved Trip, Combat Reflexes
1) Trip your opponent
2) When he stands up, whack him with your sap as your AoO
3) Make your free Intimidate check. If you make the check, if you have at least 14 strength you can be guaranteed to make your opponent frightened
4) Now that he's frightened he has no choice but to run away, and can no longer take the withdraw action (because he stood.) So he is forced to move away, provoking.
5) Use your AoO to trip him.
6) Rinse and repeat
So if you can connect with the attacks, your opponent is stuck in limbo. The only limitation is the Intimidate DC increases by 5 each time.

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Lord Pendragon wrote:I've been thinking of rolling up a reach weapon specialist type for PFS, I might end up putting this into practice.Dust Raven wrote:Now I'm trying to imagine how Bull Rush would look as an AoO. Might be a fun tactic for those with reach weapon to keep opponents at the proper range...Darn. :(Trip is your friend. :)
I did this, though I haven't had a chance to play him yet.
Lore Warden fighter with 18 str, 14 dex, Weapon Focus: Guisarme and Combat Reflexes at level 1. Since Lore Wardens get the prerequisite for Improved Trip as a bonus feat at level 2, I'll use my fighter bonus feat at 2 for Improved Trip, then add Fury's Fall at level 3, which is the same level I'll get the Lore Warden +2 bonus to CMB and CMD. That's +15 to trip by level 3 (+4 str, +3 BAB, +2 Lore Warden, +1 Weapon Focus, +1 Masterwork weapon, +2 Improved Trip, and +2 Fury's Fall), usable from 10 feet away with up to 3 AoOs per round.
I considered going the whip trip route, but that requires more feats, and has less of a backup plan. If you're holding a whip, what do you do against enemies that can't be tripped? For that matter, you'll lack the damage potential to take advantage of the AoO provoked when your tripped enemy stands up. With a guisarme, the backup plan is that I'm still a fighter with 18 strength and a two handed pole arm, so I can just whack things for damage. I'll pick up Power Attack, Weapon Specialization, and similar dmg focused feats at levels 4+.

Ravingdork |

RumpinRufus wrote:However, you may not use Trip as an Attack of Opportunity when an opponent stands up from prone.Specifically:
You may use Disarm, Sunder, or Trip as an attack of opportunity.
Well, you can, but it wouldn't do anything.

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sieylianna wrote:Well, you can, but it wouldn't do anything.RumpinRufus wrote:However, you may not use Trip as an Attack of Opportunity when an opponent stands up from prone.Specifically:
You may use Disarm, Sunder, or Trip as an attack of opportunity.
...
I never thought of that, but you're right. The AoO is resolved before the action that provoked it.
So if the enemy's prone before standing up to provoke an AoO, you can trip him to make him prone (still), and then he still stands up afterward.

redward |

Ravingdork wrote:sieylianna wrote:Well, you can, but it wouldn't do anything.RumpinRufus wrote:However, you may not use Trip as an Attack of Opportunity when an opponent stands up from prone.Specifically:
You may use Disarm, Sunder, or Trip as an attack of opportunity.
...
I never thought of that, but you're right. The AoO is resolved before the action that provoked it.
So if the enemy's prone before standing up to provoke an AoO, you can trip him to make him prone (still), and then he still stands up afterward.
I'm not sure you can trip them while prone. If you could, then using Greater Trip would still provoke AoOs from the successful trip. That seems...off to me.

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Fromper wrote:I'm not sure you can trip them while prone. If you could, then using Greater Trip would still provoke AoOs from the successful trip. That seems...off to me.Ravingdork wrote:sieylianna wrote:Well, you can, but it wouldn't do anything.RumpinRufus wrote:However, you may not use Trip as an Attack of Opportunity when an opponent stands up from prone.Specifically:
You may use Disarm, Sunder, or Trip as an attack of opportunity.
...
I never thought of that, but you're right. The AoO is resolved before the action that provoked it.
So if the enemy's prone before standing up to provoke an AoO, you can trip him to make him prone (still), and then he still stands up afterward.
And again, why does that matter? Either you attack someone who is prone, or you trip them while prone and then attack them from the provoked AoO. Either way, you get an attack on a prone opponent. The only difference is that if you trip them while they're already prone, then you're wasting one of your AoOs for the round to get the non-trip attack, instead of just taking it in the first place.

redward |

And again, why does that matter? Either you attack someone who is prone, or you trip them while prone and then attack them from the provoked AoO. Either way, you get an attack on a prone opponent. The only difference is that if you trip them while they're already prone, then you're wasting one of your AoOs for the round to get the non-trip attack, instead of just taking it in the first place.
The difference is this:
Under that interpretation, my bard (with Greater Trip) can trip someone, which provokes from anyone who threatens, including me, so maybe I disarm themOn their turn, they can stand up, which provokes from me, so I trip again, which again provokes from everyone who threatens
Now the person is up, without a weapon, and on my turn I'm tripping them again, provoking again, and they're probably already dead.
It makes Greater Trip ridiculously overpowered, when it should probably only be moderately overpowered.
Regardless, from the Trip description:
Some creatures—such as oozes, creatures without legs, and flying creatures—cannot be tripped.
I would argue that includes creatures who are already prone.

redward |

not to add confusion too this excellent conversion.
what is the armor class adjustments when the prone person stands up.
next does the Rogue ability "Stand up" change the AC Adjustments.
(it changes the move action to a free action.)
The person is prone, so they're at -4 to AC vs. melee, +4 vs. ranged. I don't think Stand Up changes any of that.
/Ninjiggied

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If you're prone, you have a -4 to AC against melee attacks and a +4 to AC against ranged attacks. That's all there is to it.
And again, AoO's are resolved before the actions that provoke them, so that AC adjustment applies to AoO's from standing up, because the person is still prone during the AoO. Just thought I'd mention it, since I had to think about that one the first time it came up for me.

InsaneFox |
Jiggy wrote:If you're prone, you have a -4 to AC against melee attacks and a +4 to AC against ranged attacks. That's all there is to it.And again, AoO's are resolved before the actions that provoke them, so that AC adjustment applies to AoO's from standing up, because the person is still prone during the AoO. Just thought I'd mention it, since I had to think about that one the first time it came up for me.
It should also be noted that since they're already prone, you can't re-trip them on an AoO as they attempt to get up. Since it effectively flows like this:
Prone target declares that he is standing > Attacker's AoO proc's > Prone target finishes his action, becoming no longer prone.

StreamOfTheSky |

You can always use Trip, Disarm, and Sunder on an AoO.
It is also possible to use other maneuvers, but it's not the default. If you have a monster with a maneuver or maneuver-like special attack that chains off a normal hit (like Grab), that will do it. Also, the Barbarian rage power Knockback would allow you to bull rush in place of an attack. Just as some examples.