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Old 05-20-2021, 06:23 PM   #12
Michael Thayne
 
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Join Date: May 2010
Default Re: [Sorcery] Michael's daily sorcerous spells thread

Our first Control (Natural Phenomena) build. I spent a lot of time going through canonical GURPS sources to figure out the game effect of clouds and as far as I can tell, whenever this has been addressed the effects have been quite minor, so I built this on the assumption it would rarely offer a 1 bonus/penalty. Of course, the spell could have a much bigger impact on aviators, especially early aviators flying by the seat of their pants, but this is tricky enough to pull off that I didn't think it warranted requiring more levels of Control.
Clouds
Keywords: Area (Special).
Full Cost: 59/64/69 points for levels 1-3, plus 19.5 points for each additional level*.
Casting Roll: IQ.
Range: 0.
Duration: 16 minutes, 40 seconds.

You can alter the cloud cover around you in a radius of 0.1 level miles. This can't darken the sky enough to cause penalties for poor lighting during the day, but can worsen darkness penalties by -1 on a clear night (including twilight hours), or eliminate -1 in darkness penalties from a heavily overcast night.

This is also a Weather spell.

Statistics: Level 1 is Control Cloud Cover 1 (Emanation, -20%; Extended Duration 100, +80%; Natural Phenomena, +100%; No effect on daytime vision penalties, -15%; Sorcery, -15%) [23] + Control Clouds 2 (Does not increase area, -50%; Emanation, -20%; Extended Duration 100, +80%; Natural Phenomena, +100%; No effect on daytime vision penalties, -15%; Sorcery, -15%) [36]. Levels 2-3 remove "Does not increase area" from one level at a time [+5/level]. Further levels add Control Clouds (Emanation, -20%; Extended Duration 100, +80%; Only to increase area, -50%; Natural Phenomena, +100%; Sorcery, -15%) [+19.5/level].
* Calculate the total cost and then round up.
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