I always liked the system in Arduin Grimoire Volume III: The Runes of Doom.

The 1st level heal lesser wounds spell cures 25% of the target's maximum hit points; 2nd level heal serious wounds cures 50%; 3rd level heal grievous wounds cures 60%; and 4th level heal critical wounds cures 100%.

A character with 10 hit points would get back 3 from HLW, 5 from HSW, 8 from HGW, and 10 from HCW.

A character with 60 hit points would get back 15 from HLW, 30 from HSW, 45 from HGW, and 60 from HCW.

Some other variants I’ve heard used over the years:

- I’ve reduced the CSW to 3rd level, and bumped Cure Disease to 4th (no changes in die rolls though)
- add +1/level of caster above the minimum for the spell to all curing spells:  a 9th cleric casts CLW at +8, and CSW at +2; other variants I’ve heard let you add that to the total max within the spell (so you can max out more easily, but don’t exceed the max)
- I think that 2e and/or 3e allows clerics to turn non-healing spells into cure spells, and/or to substitute higher-level spells as lower-level cure spells, or something like that too

Allan.

What a coincidence. On page 22 of the Princeton 3rd Annual D&D Convention book is a table for a spell point system that makes a lot of sense. It's based on SP gained from your INT score, and the cost of a spell by level goes down as you level up. So at L12 you could cast 18 first level spells at 1pt. each, or 3 6th level spells at 6 points each. They're up to PrinceCon 49 this spring, so I believe this was in 1980. I'm going to take a look at it and maybe tweak it a bit.

I base it on total HP.
Gain 10% of them per day of rest. (Round down of course.)