Hey folks - I've seen a thread or 2 on the topic but still unclear on the answer to the 3 questions below:
1) A wizard cast magic missile in round 1 and is then hit by an arrow for 6 damage. He then tries to cast magic missile again in round 2 - does he have to make a concentration check? If so, what's the DC?
2) A wizard cast magic missile in round 1 and is then hit by a bard's blistering invective and catches fire. He then tries to cast magic missile again in round 2 - does he have to make a concentration check? If so, what's the DC?
3) Exact same scenarios - but the wizard is trying to cast Summon Monster; beginning in Round 1 and finishing in round 2. Does he have to make a check for being hit by and arrow? For catching on fire? If so what are the DCs?
Thanks in advance!!!
1. No
2. Yes; see below
3. Yes; see below
The DC for concentration is fairly easy to calculate:
Casting defensively: 15 + (spell level x 2)
Non-ongoing damage while casting: 10 + damage dealt + spell level
Ongoing damage while casting: 10 + (damage dealt x .5) + spell level
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If the wizard is hit for damage -while- casting the spell, or is taking continuing damage, there are concentration checks.
The first usually happens when someone readies an action for when the caster is casting, such as a sword strike, or a bow shot as you suggested. But just a bow shot on someone else's turn doesn't make a concentration check for magic missile. For the 1 round summon monster, however, it still would. 1-round casting time spells can be dangerous for the caster.
Edit: ninjaed! But, I gave the link...
I agree on #1.
For #2 - I would say that catching on fire as result of Blister Invective would count as a being under the effects of a distracting spell (not to mention continuous damage... I think. So the DC = the DC is the spell's saving throw DC + the level of the spell you're casting?
For #3 - since summon monster is a full round the arrow would cause DC = 10 + damage + spell level. for being on fire dc = Blistering Invective DC + spell level
agree?
1. No
2. Yes; see below
3. Yes; see belowThe DC for concentration is fairly easy to calculate:
Casting defensively: 15 + (spell level x 2)
Non-ongoing damage while casting: 10 + damage dealt + spell level
Ongoing damage while casting: 10 + (damage dealt x .5) + spell level
I guess that's my point... how is it that the DC for being on fire from a spell is only 10 + (damage dealt x .5) + spell level... wouldn't that count as being distracted by a spell?
2. You would only need to roll a concentration check for a spell being cast on you if it's non-damaging, per the Concentration Check DCs table. Additionally, the check for being affected by a spell only happens if you were affected by the spell while casting; this would only happen if you had a spell that required multiple rounds to cast. So in the case of Blistering Invective you'd only roll based on the damage.
3. Each damage source would be its own check, I believe; the arrow would be 10 + damage + spell level, while the fire damage from Blistering Invective (an ongoing damage source) would be 10 + (damage x .5) + spell level.
Re: Blistering Invective, if you were casting a spell while Blistering Invective was cast upon you (for example, you're casting a spell that takes multiple rounds) then the first roll would be as though it were standard damage (10 + damage + spell level); the ongoing damage would be easier (10 + (damage x .5) + spell level).
After reading Acid arrow I believe I agree with you Xaratherus... though I disagree with the logic of the rule... somebody on fire should have to make a concentration DC higher than 10 +(1d6 / 2) + spell level...
And a caster who just took an arrow to the chest 6 seconds before he tries to cast a spell should have to make some kind of concentration check... you can't just shrug damage like that...
just saying :)
Fair enough - thanks guys!