Well, it'd probably work similar to the Millennial Fair's silver points... The only obstacle I can see is that we'd have to get into the battle engine and set it up so that Schala's attacks decrease her Pendant Points (I'll abbreviate it PP for now) with each attack. Also, the player would need a display to let them know how many PP Schala has left. This could get pretty messy. Because of this, I'm against that system for now, but who knows?
Another option could be that her pendant just needs to be recharged after a certain amount of time, rather than a certain number of discharges. So she could always attack, but if it's been like 300 hours since you last charged it, it would do minimal damage.
Now THAT variation on the system could get really cool, and it wouldn't be too difficult. In the object code for when we draw Schala in the party on each screen, we'd just have to insert a check to see how long it's been since the pendant was last charged, find the address that stores her attack power, and adjust it accordingly.
Different charge points could charge her pendant to different levels of strength... Example, a standard save point might boost her pendant a little, while throwing it in front of the Mammon Machine would put it up to huge power. Other variations could also exist... Schala could also charge her pendant by using more "secret" objects such as the Sun Stone or even the Frozen Flame, the latter of which would give her INSANE attack power and would have to be very secret (if we can justify its presence at all). I'd imagine that if her pendant was charged by the Frozen Flame, her attacks may be on par with the Lavos Core's slap attack. =P Now THAT'S cool.
