[3rd edition] Power stones.

Anaraxes · 08-05-2015, 12:26 PM

Powerstones are mana batteries for mages. They're made from gems, and enchanted with a particular enchantment spell. They have a certain size, a number of FP they hold. Mages can use the energy in exactly one powerstone that they're touching as part or all of the cost to cast a spell. Powerstones recharge automatically at a rate of 1 point / day in normal mana areas, and only recharge if they are not within six feet of another powerstone. (Again, the idea is for mages to have only one active stone. But of course players will go to great lengths to circumvent that limit, putting one on either end of their six-foot-one-inch staff and so on.)

The Magic section in Basic, B236, "Energy Cost", explains the energy cost for a spell. Basically mages spend their FP or HP to supply the number of energy points need to cast a spell. Each spell states its cost to cast; high skill reduces this cost.

GURPS Magic discusses powerstones in more detail.

08-05-2015, 12:26 PM	#2
Anaraxes Join Date: Sep 2007	Re: [3rd edition] Power stones. Powerstones are mana batteries for mages. They're made from gems, and enchanted with a particular enchantment spell. They have a certain size, a number of FP they hold. Mages can use the energy in exactly one powerstone that they're touching as part or all of the cost to cast a spell. Powerstones recharge automatically at a rate of 1 point / day in normal mana areas, and only recharge if they are not within six feet of another powerstone. (Again, the idea is for mages to have only one active stone. But of course players will go to great lengths to circumvent that limit, putting one on either end of their six-foot-one-inch staff and so on.) The Magic section in Basic, B236, "Energy Cost", explains the energy cost for a spell. Basically mages spend their FP or HP to supply the number of energy points need to cast a spell. Each spell states its cost to cast; high skill reduces this cost. GURPS Magic discusses powerstones in more detail.