Cruciatus for ArM

[Peregrine_Bjornaer]

@Lasse Rohde

Seconded.
Although I would suggest you add 'Perdo Corpus level 20' in there somewhere, before you add it to the Grimorie

Derp! Fixed.

@Christian Andersen

@Alexios ex Miscellanea

Salvete, Sodales !

PeCo 15 is correct for this version (cf ironboundtome's version 4 posts above) as the base is 4 not 5. In order to mimick the Harry Potter spell, I'd add 2 magnitudes and raise the ease factor to 15. Fighting through the pain should somehow be possible but is supposed to be really hard.

Vale,
Alexios ex Miscellanea

Following the rules for resisting poisons from the Cr Aq guidelines for poison raising the Ease factor to resist means raising the magnitude of the spell by one per +3.

Base 4 might be enough, but the Ease Factor should not be too high here. Basic poisons spells start with Ease factor 3! And IMHO they are not interesting before they're raised to at least 9, otherwise it is simply too easy to resist.
People argued for using Base 5 for crippling pain such as this. Perhaps the base for is for something modest like EF 6, which means raising it to a whopping 15 means +3 magnitudes.

The only mention of ease factors for resisting PeCo I can find is EF 6 for resisting disease, with an increase of +1 Magnitude for each +1 to the Ease Factor.

The analogous PeAn spell, Agony of the Beast, has a Stamina + Size stress roll of 9+ to do anything but "lashing wildly about, upsetting any nearby objects, and howling in great pain." And while PeCo and PeAn aren't exactly identical, most of the guidelines are the same – almost verbatim descriptions for the same level. As the OP, I'm comfortable calling it an Ease Factor 9, based on that. Moreso than resisting poisons from CrAq or resisting disease from PeCo, unless someone can convince me otherwise.

Not quite sure where Christian Anderson got the +1 Magnitude per +3 Ease Factor, but it sounds familiar and about right. And I can see someone inventing a more excruciating version of the spell to make it more painful and thus more difficult to resist.

[Tellus]

@Peregrine_Bjornaer

Not quite sure where Christian Anderson got the +1 Magnitude per +3 Ease Factor, but it sounds familiar and about right. And I can see someone inventing a more excruciating version of the spell to make it more painful and thus more difficult to resist.

CrAq box on p. 121, creating poisons.
Same is found for MuAq, p. 123.

Though admittedly PeCo appears to increase more slowly, this looks more like an error. <- Personal opinion!

[Christian_Andersen (Christian Rosenkjaer Andersen)]

@Peregrine_Bjornaer

@Lasse Rohde

Seconded.
Although I would suggest you add 'Perdo Corpus level 20' in there somewhere, before you add it to the Grimorie

Derp! Fixed.

@Christian Andersen

@Alexios ex Miscellanea

Salvete, Sodales !

PeCo 15 is correct for this version (cf ironboundtome's version 4 posts above) as the base is 4 not 5. In order to mimick the Harry Potter spell, I'd add 2 magnitudes and raise the ease factor to 15. Fighting through the pain should somehow be possible but is supposed to be really hard.

Vale,
Alexios ex Miscellanea

Following the rules for resisting poisons from the Cr Aq guidelines for poison raising the Ease factor to resist means raising the magnitude of the spell by one per +3.

Base 4 might be enough, but the Ease Factor should not be too high here. Basic poisons spells start with Ease factor 3! And IMHO they are not interesting before they're raised to at least 9, otherwise it is simply too easy to resist.
People argued for using Base 5 for crippling pain such as this. Perhaps the base for is for something modest like EF 6, which means raising it to a whopping 15 means +3 magnitudes.

The only mention of ease factors for resisting PeCo I can find is EF 6 for resisting disease, with an increase of +1 Magnitude for each +1 to the Ease Factor.

The analogous PeAn spell, Agony of the Beast, has a Stamina + Size stress roll of 9+ to do anything but "lashing wildly about, upsetting any nearby objects, and howling in great pain." And while PeCo and PeAn aren't exactly identical, most of the guidelines are the same – almost verbatim descriptions for the same level. As the OP, I'm comfortable calling it an Ease Factor 9, based on that. Moreso than resisting poisons from CrAq or resisting disease from PeCo, unless someone can convince me otherwise.

Not quite sure where Christian Anderson got the +1 Magnitude per +3 Ease Factor, but it sounds familiar and about right. And I can see someone inventing a more excruciating version of the spell to make it more painful and thus more difficult to resist.

As Tellus said - Creo Aquam.
But all things aside since Agony of the Beast is already virtually the spell you need save for being a different Form, in hindsight I wouldn't muck it up more than I have to. So just accept the fixed Stm roll. Sure, it does sound like the PeAn 4 guideline is more powerful than the PeCo 4 suggests. But the Co guideline has no roll and lists only "pain" so...perhaps this is what happens if you make said roll? I guess this is just one of the minor discrepancies there are among guidelines.
I think the spell this thread ended up with is allright.