Standing up from prone and AoO

Grayhawk

First Post
Excactly when does an AoO takes place?

If it is resolved before the action that triggers it, you won't be able to make a trip attack as your AoO against someone trying to stand up from prone, as they're actually still prone when the AoO is triggered.

Or what?
 

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Well, I would assume that it would occur just before the "standing" action is completed. When a mage casts a spell, the AoO goes off before the spell does, thus possibly preventing the casting all together.

Also, when readying an action, the readied action explicitly takes place just /before/ the trigger. That seems similar in function to an AoO as well, so as a DM I would rule that you couldn't trip someone who was standing up with an AoO.
 

During would be my best bet. If you get an AoO from someone casting a spell, your attack doesn't hit before they start attacking, it occurs during their casting.
 

Even if the AoO happens during the action that triggers it, does it prevent the action from being completed after the AoO is resolved?

Basically, which of the following is correct:

1: You can't try to trip someone as the AoO you get from him trying to get up, as he's already down when the AoO is triggered.

2: You can try to trip as the AoO you get from someone trying to stand up, but the AoO is resolved before the action of standing and a successful trip attack doesn't prevent him from continuing to stand up after the AoO (and thus finishing the MEA of standing up).

3: You can try to trip as the AoO you get from someone trying to stand up, and a successful trip attack knocks the person back down, making him lose his MEA.

While option 2 seemingly makes trip useless as an AoO provoked by someone trying to get up, it seems to follow the way that most actions that trigger AoO's aren't prevented by a successful AoO.


Bonus question: If you have Improved Trip do you get to make a free attack if you successful trip on an AoO?

Bonus question 2: If a caster is tripped during casting, does he still get to make a concentration check to get the spell off?
 

I'd go with Nr. 2 making a trip attack almost useless since the enemy is still down. Mind the Boni for hitting a prone target with youe AoO!

Bonus question 1: I'd not give a free attack from the tripping with the AoO but reserve these actions only on the Trippers turn.

Bonus question 2: I'd treat it as if the caster was affected by an Earthquake-spell (DC: 20+spell level)
 

I go with number 2 as it someone pointed out in a similar thread that the AoO are handled before the action that provoked them. So as you said, he'd be on the ground and your trying to trip him again which doesn't do anything. The better thing would be to just attack him.

On another similar note, a player in the gaming group I'm in brought up something I'll probably house rule and that is getting up as a Standard action as opposed to a MEA doesn't provoke an AoO. This is a house ruling possibility so plese don't tell me it isn't in the book. The thought behind this is that as a standard action your directing more focus to protecting yourself as you stand up. I like the idea but wouldn't mind hearing others thoughts.

Tellerve
 

Man, Improved Trip is way powerful now. Don't forget that if the AOO is before the standing occurs, you get the +4 vs prone for the attack. (I'm assuming that hasn't changed in 3.5.)
 

Grayhawk said:

3: You can try to trip as the AoO you get from someone trying to stand up, and a successful trip attack knocks the person back down, making him lose his MEA.

Bonus question: If you have Improved Trip do you get to make a free attack if you successful trip on an AoO?

Bonus question 2: If a caster is tripped during casting, does he still get to make a concentration check to get the spell off?

Option #3 would be correct. If you attack a Wizard when he casts a spell, he has to make a concentration check to finish the casting. He doesn't get to "try again" at casting the spell without losing his action.

Thus, if you provoke an attack of opportunity by trying to stand, and are tripped again, your move action is wasted, and you're back on the ground.

If a prone target provokes an attack of opportunity by doing ANYTHING, even trying to stand up, the opponent should get the +4 to attack on him. He hasn't actually stood up yet, he's only TRYING.

Yes, if you make your AoO a trip attempt, and sucessfully trip, you get a free attack per Improved Trip.

If a caster is tripped by an AoO he doesn't have to make a concentration check at ALL. He hasn't taken any damage, and to my knowledge, there is no penalty from casting while prone. If he has to make a touch or a ranged touch attack, he may suffer penalties from this. If the person tripping the caster had Improved Trip, and hit the caster with his free attack after tripping, then the caster WOULD have to make a concentration check against that damage.

I think I'm right on all this, but others can weigh in on it.. ;)
 

I agree with everything Murrdox said except about the caster being tripped. I believe that would count as being jostled or some such. A Concentration check would probably be in order. I'd probably set the DC somewhere around riding a horse DC. Don't have my books so I can't check what that is at the moment though.
 

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