10-13-2018, 03:52 PM | #1 |
Join Date: Sep 2018
Location: North Texas
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Powerstone gems
A powerstone (previously know as ST battery) can potentially hold hundreds of ST to draw from, though it would take a long time to build one up that high.
Has anyone ever created rules for requiring specific gems or quality in order to support higher ST capacity? The rules simply say the stone must be worth at least $1000 which could be interpreted to imply there might be some correlation between the stone's value and it's capacity. |
10-13-2018, 05:26 PM | #2 | |
Join Date: Jan 2018
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Re: Powerstone gems
Quote:
Such a house rule makes sense. I could suggest the gem must have a value of at least the 5% (in thousands $) of the total ST capacity: $ 1000 up to ST 20 $ 2000 up to ST 40 $ 3000 up to ST 60 ... and so on or the 10% if the GM is particularly evil |
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10-14-2018, 12:30 AM | #3 |
Join Date: May 2015
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Re: Powerstone gems
GURPS Magic circa 1986 had powerstones limited to ST by karat weight/value of the gem used, yes. Current GURPS Magic has a polynomial formula for the cost, so it isn't just linear, making smaller stones inexpensive but powerful ones really expensive.
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10-14-2018, 08:55 AM | #4 |
Join Date: Dec 2017
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Re: Powerstone gems
Elric's Ruby Throne might be a good candidate for the gem required for a several hundred point Powerstone.
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10-15-2018, 06:19 PM | #5 | |
Join Date: Dec 2017
Location: behind you
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Re: Powerstone gems
Quote:
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11-02-2018, 09:37 AM | #7 |
Join Date: Mar 2008
Location: Austin, TX
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Re: Powerstone gems
Spell idea: Prepare Gem. It turns an uncut gemstone into the optimum shape for a powerstone. :)
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