AoO while casting what DC for the concentration check

[DarkMaster]

Is it possible for a caster to perform an AoO while casting a spell. I just build a Combat Sorcerer for a pbp game and he is using a spiked chain. Imagine the following Enemy ready an action to charge on him if he starts casting. Sorcerer start casting while holding the chain in his other hand. Enemy charge on the sorcerer. Can the sorcerer get an AoO and what concentration DC would be appropriate. I was thinking of something like DC 15 or DC 10 + spell level?

 

[UltimaGabe]

A Spiked Chain is a two-handed weapon. Unless the sorcerer has three hands, there'd be no way he could make an attack (thus cancelling the somatic components of the spell) and still keep it going.

 

[Bigwilly]

Not in my campaign

I would rule that if you take the AoO, you lose the spell - castus interruptus. If you want to cast a spell without getting pounded, try standing behind the fighter - that's what he's there for. On the other hand, if you're trying to play silly buggers with the spiked chain (powergamers weapon of choice) you deserve the pounding.

Bigwilly

 

[DarkMaster]

A Spiked Chain is a two-handed weapon. Unless the sorcerer has three hands, there'd be no way he could make an attack (thus cancelling the somatic components of the spell) and still keep it going.

Right I just noticed that chain was two handed exotic weapon. I never had a player or play a PC on a pbp using the spiked chain. Let's say I take the longsword as weapon of choice, do you think it would be fine if he could do an AoO during a 1 round spell. I am expecting this combat sorcerer to be front line fighter during the first level of his carreer, STR 18 at level one.

 

[DarkMaster]

I would rule that if you take the AoO, you lose the spell - castus interruptus. If you want to cast a spell without getting pounded, try standing behind the fighter - that's what he's there for. On the other hand, if you're trying to play silly buggers with the spiked chain (powergamers weapon of choice) you deserve the pounding.

Bigwilly

I see the chain being powerfull but it requires an extra feat, it does less damage than most two handed weapon but has reach. With the enlarge spell I admit that this can be powerfull at first level.

As for standing behind the fighter, I think that he is the one who will stand behind my combat sorcerer (UA Variant) at least for the first few level. This variant allow you to play an Arcane caster that can do something usefull even in the first 6-7 level.

 

[Pax]

Right I just noticed that chain was two handed exotic weapon. I never had a player or play a PC on a pbp using the spiked chain. Let's say I take the longsword as weapon of choice, do you think it would be fine if he could do an AoO during a 1 round spell. I am expecting this combat sorcerer to be front line fighter during the first level of his carreer, STR 18 at level one.

I might, as a GM, require the same Concentration cehck as for casting defensively, in order to get the AoO - the spell would have "priority of place" in the sorceror's mind, though. And I'd ONLY do that if the casting time was 1 round or more; for anything else, I wouldn't penalise a spellcaster in comparison to a nonspellcaster - even a full-round-action spellcast, is no different in terms of wether or not you could make an AoO, compared to (say) a full ATTACK. IMO, at least; YMMV.

 

[DarkMaster]

I might, as a GM, require the same Concentration cehck as for casting defensively, in order to get the AoO - the spell would have "priority of place" in the sorceror's mind, though. And I'd ONLY do that if the casting time was 1 round or more; for anything else, I wouldn't penalise a spellcaster in comparison to a nonspellcaster - even a full-round-action spellcast, is no different in terms of wether or not you could make an AoO, compared to (say) a full ATTACK. IMO, at least; YMMV.

Since there is no one hand reach weapon, I don't see how you could do an AoO while casting a standard action spell.

I agree with you about the full attack and casting a spell. In order to be fair both should be allowed to have an AoO.

 

[MerakSpielman]

What if there are two casters standing next to each other with daggers in one hand (primary hand, I'm assuming) and casting spells at each other with their other hand?

Oooo! Wizard grunge fight! I'm imagining them being chained to each other by the ankles with a 4' chain. Cool!

 

[Hypersmurf]

I might, as a GM, require the same Concentration cehck as for casting defensively, in order to get the AoO - the spell would have "priority of place" in the sorceror's mind, though. And I'd ONLY do that if the casting time was 1 round or more; for anything else, I wouldn't penalise a spellcaster in comparison to a nonspellcaster - even a full-round-action spellcast, is no different in terms of wether or not you could make an AoO, compared to (say) a full ATTACK. IMO, at least; YMMV.

The rules disallow it.

"You only provoke attacks of opportunity when you begin casting a spell, even though you might continue casting for at least one full round. While casting a spell, you don’t threaten any squares around you."

From the text of the "Cast a Spell" Full Round action.

-Hyp.

 

[DarkMaster]

The rules disallow it.

"You only provoke attacks of opportunity when you begin casting a spell, even though you might continue casting for at least one full round. While casting a spell, you don’t threaten any squares around you."

From the text of the "Cast a Spell" Full Round action.

-Hyp.

Thanks