The book itself isn't terribly specific about this, and I can't seem to find any examples of a general spell with a specific level for reference. Do I only use the base of the spell when calculating effect, or do I add in modifiers like targets, duration, range, and requisites when calculating effect? More specifically, if I were to learn the Perdo Vim spell Demon's Eternal Oblivion at level 20, would it reduce a demon's Might by 20 or 30 points?

Reduce a target's Might Score by the level of the spell + 10, as long as the spell penetrates the creature's resistance.

This is the general effect listed, for reference.


You use the base level, but be careful of the low leveled versions of the spell that depart from the 1mag/5level paradigm.

So, let's look at the case of DEO. (Core Book, p160, first printing)


R: Voice, D: Mom, T: Ind

Weakens and possibly destroys a demon. If the spell penetrates the demon’s Magic Resistance, the demon loses Might Score equal to the spell’s level. (Base effect, +2 Voice)

This is very telling. (We'll get to low levels in a second, cause they're annoying.)

If I have DEO at 20, the demon loses 20 might (assuming I can penetrate its magic resistance.) This is because the +2 mags from voice are neatly countered by the "+10 levels" of the spell's bonus.

If, on the other hand, I have DEO at 10, this implies a base 4, +2 magnitudes voice). Base 4 translates into 14 points of might destroyed. Yes, this is headache inducing.

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    \$\begingroup\$ I think we always played it as "+2 magnitudes" rather than "+10 levels", keeping it simple. DEO at lv10 takes down 10 Might, c'est tout. I feel this keeps to the spirit of the rule while avoiding the anomalies you point out at low levels. \$\endgroup\$ – lisardggY Jun 2 '13 at 6:53
  • \$\begingroup\$ That certainly makes much more sense, and reviewing the guidelines of the other bloody spells in the section, it's quite quite reasonable. It is, however, a house rule. \$\endgroup\$ – Brian Ballsun-Stanton Jun 2 '13 at 6:57
  • \$\begingroup\$ Aha! So I can go Base Level 3, Voice +2, and get a level 5 spell that destroys 13 levels of demon might. I was under the impression it was base level, but thought it might possibly be total level, so that long range/high duration/multiple target spells had a decent minimum. Thanks for clearing this up. \$\endgroup\$ – user5834 Jun 2 '13 at 9:07
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    \$\begingroup\$ While that is... unfortunately true, I do urge you to discuss with your troupe the alternate house rule that @lisardggY suggested above. Also be advised that actually poking demons in any way just gets you into more trouble. (If they're played correctly.) \$\endgroup\$ – Brian Ballsun-Stanton Jun 2 '13 at 9:41

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