Soul Sacrifice had a system where you had to pick between 3 types of stats to build around which affects which spells you could use. After each mission you would have to pick between saving someone or sacrificing them which affects your stats.

If you chose power, you end up becoming a glass cannon with spells that drain your own hp
if you chose def, you end up with spells that supported you and the higher your hp the more damage you did. The trade off is your damage is mostly low.
if you chose neutral then you were pretty balanced.

All of these were affected also by the factions you were part of and which spells you have access to.