Paizo Top Nav Branding
  • Hello, Guest! |
  • Sign In |
  • My Account |
  • Shopping Cart |
  • Help/FAQ
About Paizo Messageboards News Paizo Blog Help/FAQ
Pathfinder Roleplaying Game
Pathfinder Society

Pathfinder Beginner Box

Pathfinder Adventure Card Game

Pathfinder Comics

Pathfinder Legends

PaizoCon 2014!

Spell Resistance help


Rules Questions


Sorry if similar questions have been posted i tried to search but couldn't find anything that explained spell resistance to the point that im confused. i ply a level 18 sorcerer, to overcome sr do i roll a just a d20 and add my cl of 9 or do i get to add bab and such like i would for armor class?? up until this point our party has ignored sr all together as none of us wanted to mess with it, but the dm through a Nalfeshnee which has a base sr of 25, and its summoned by a level 17 antipaladin which gives it an additional 11+ paladin lvl which would make the Nalfeshnee have the ungodly sr of 49 so does that mean there is no way for me to hit it as if i just roll d20+9 a perfect would only be 29???

Taldor

Spell resistance works just like a to hit roll against AC.

SR works like AC
CL is BAB.

roll d20 and add your CL. if it meets or exceeds the SR, then you hit with your spell. if there is a subsequent save that must be made, then the creature makes another roll for that save as normal.


As a 18th level sorceror, you have a caster level of 18. You can cast 9th level spell, yes, but that is unimportant as far as spell resistance goes.

When you make a SR check, you roll a d20 and add your caster level plus any bonuses you might have from feats or magic items. Some feats grant a bonus on spell penetration checks, some items do so as well, and some items can simply grant an increased caster level (which counts too).

So you would roll a d20+18. If that number equals or exceeds the target's SR, your spell affects it normally. If not, the spell fails to affect the creature, but make sure the spell is one that says SR: Yes. Scorching Ray does, but Acid Arrow does not, so if you want to avoid having to make spell pen checks, you might pick spells that don't have to make them.

Regarding the Nalfeshnee, it would receive its own SR or the SR granted by the Antipaladin, whichever is better, but not both added together. Which would be 28 from a 17th level antipaladin, which means you would have to roll a 10 on the d20 for a spell to get through it's spell resistance.


ok thanks that explains it, also i thought cl was half my actual level like for fireball and such i would only get 9d6 right?

Qadira

Pathfinder Adventure Path Charter Subscriber; Pathfinder Comics Subscriber; Pathfinder Campaign Setting, Card Game, Companion, Maps, Modules, Roleplaying Game Subscriber

To expand on some of what Black Bard said (good explanation):

Your caster level (CL) is the level you have attained in the class that is casting the spell, regardless of overall character level.

A 20th level Bard has a CL of 20.

A 13th level Sorcerer has a CL of 13.

A 3rd level Druid/4th level Ranger/2nd level Rogue has a CL of 3 for Druid spells and a CL of 1 for Ranger spells.

A 3rd level Oracle/3rd level Sorcerer/4th level Mystic Theurge has a CL of (3+4) for both Oracle and Sorcerer spells.


ok but for spells they typically are 1d6 per caster level so would i be at 9d6 or 18d6?


chris spanirl wrote:
ok but for spells they typically are 1d6 per caster level so would i be at 9d6 or 18d6?

Depends on the spell. A Fireball at Caster Level 18 caps out at 10d6, refer to the spell description for that maximum. Only with other abilities can you increase that.

Edit, to add a tremendously detailed example: Suppose an 18th level sorcerer casts Fireball, and there are a few creatures in the fireball's blast area: a creature with SR 25, a creature with SR 10, and a creature with no SR; and the sorcerer doesn't have any special abilities that augment the fireball or ways to increase caster level checks for spell resistance. The sorcerer rolls 10d6 for damage, and 1d20+18 against 25 for the first creature's SR, 1d20+18 against 10 for the second creature's SR (though this automatically succeeds even on a 1, so the roll can be skipped). If the sorcerer rolls 1-6 on that first d20 (totaling 19-24), the SR 25 creature resists the fireball, and is totally unaffected, but if the sorcerer rolled a 7 or higher, the SR 25 creature's resistance was bypassed/pierced/whatever you want to call it, and is affected normally. Each affected creature then rolls their Reflex save and so on (that is, to say, one creature resisting the spell doesn't stop the spell for anyone else in the area).

Qadira

Pathfinder Campaign Setting Subscriber
chris spanirl wrote:
ok but for spells they typically are 1d6 per caster level so would i be at 9d6 or 18d6?

That depends on the spell.

Fireball gives you 1D6 per level, but it caps at 10d6. So after 10th level you essentially always get 10D6 on a fireball.

Lower spells, such as Magic missile, give you something every two levels. so you get the extra missile on every odd level, until you hit its maximum.


so basicly ive only been doing half the damage i could have our entire campaign......


chris spanirl wrote:
so basicly ive only been doing half the damage i could have our entire campaign......

Yup. :(


Whoa, went back to finish reading that OP: 49 spell resistance? Wow. You cannot hit that target at level 18 unless you have ways to boost bypassing spell resistance. Even with the Spell Penetration feat, which adds 2 to your CL checks against SR, you'd need to roll a 19-20. The best thing for that situation is with indirect means: battlefield control, buffing yourself and allies, summons, or getting the hell out of there if none of those are viable.

There are a few spells that directly affect an enemy without being subject to SR, but by now you can't do much about it. At level 19 you could take Expanded Arcana to learn 2 new spells at levels 1-8, or if human, use the favored class bonus to gain 1 extra spell known (also levels 1-8), or use your spell trade at level 20, or better yet, maybe buy a few scrolls in town for spells you don't have for the aforementioned tactics (battlefield control, buffs, summons, getting the hell out of there).


Stazamos wrote:
Whoa, went back to finish reading that OP: 49 spell resistance? Wow.

As The Black Bard pointed out, it doesn't actually have 49 SR, since SR from different sources don't stack (just like enhancement bonuses don't stack). In this case, it actually had a SR of 28.


chris spanirl wrote:
.....but the dm through a Nalfeshnee which has a base sr of 25, and its summoned by a level 17 antipaladin which gives it an additional 11+ paladin lvl which would make the Nalfeshnee have the ungodly sr of 49 so does that mean there is no way for me to hit it as if i just roll d20+9 a perfect would only be 29???

I am pretty certain SR does not stack (at least the Core Rulebook says so). The summoned fiendish creature creature "gains" a SR of AP-level+11, not "gains an additional" spell resistance. The situationally greater SR is applied, and _only_ that one.

as referenced in this thread :

overlapping Spell resistance

and in the PFSRD :
Spell Resistance

Which in the above case should be the SR 28 gained through the AP-summoning ability. Your sorcerer would have to roll a 10 on his CL-che to beat that 28 precisely, an 8 if he was an elf (who get an innate +2 on Spell-resistance penetration).. plus any boni from feats.


Hi again do player characters have a base spell resistance or do they simply not have any??


Players do not barring racial traits.

I think Dwarves and Drow are the only races that can get spell resistance, Drow just for being Drow, and Dwarves by an alternate racial trait.


Or by being a monk to 13th and getting diamond soul.


Or by wearing a mantle of spell resistance.

Paizo / Messageboards / Paizo Publishing / Pathfinder® / Pathfinder RPG / Rules Questions / Spell Resistance help All Messageboards

Want to post a reply? Sign in.

©2002–2014 Paizo Inc.®. Need help? Email customer.service@paizo.com or call 425-250-0800 during our business hours: Monday–Friday, 10 AM–5 PM Pacific Time. View our privacy policy. Paizo Inc., Paizo, the Paizo golem logo, Pathfinder, the Pathfinder logo, Pathfinder Society, GameMastery, and Planet Stories are registered trademarks of Paizo Inc., and Pathfinder Roleplaying Game, Pathfinder Campaign Setting, Pathfinder Adventure Path, Pathfinder Adventure Card Game, Pathfinder Player Companion, Pathfinder Modules, Pathfinder Tales, Pathfinder Battles, Pathfinder Online, PaizoCon, RPG Superstar, The Golem's Got It, Titanic Games, the Titanic logo, and the Planet Stories planet logo are trademarks of Paizo Inc. Dungeons & Dragons, Dragon, Dungeon, and Polyhedron are registered trademarks of Wizards of the Coast, Inc., a subsidiary of Hasbro, Inc., and have been used by Paizo Inc. under license. Most product names are trademarks owned or used under license by the companies that publish those products; use of such names without mention of trademark status should not be construed as a challenge to such status.