how do you guys think would a demon race with siant class work in role play game, apparently holy magic and potion cause self injury, not sure what benefit come from that combo
Light-based skills that deal damage to dark types (self) and heal non-dark entities. Since even providing blessings will hurt her, her entire skillset here would have hp costs (maybe on top of mana). She'll have to tank her own moveset here.
Heals herself and her kind with Dark-based skills, something like vampiric/lifesteal attacks, maybe poison, disperse health, etc.
Looks clunky on paper, but with enough overall power and stats, you could still be an almost universal healer with extra steps.
Perhaps at higher levels in the Saint class, you get rewarded with reduced damage/immunity from light-based attacks. She'll technically be an anti-demon demon. Maybe she'll have to sacrifice her demonic nature and become a human, or an entirely different race?
Depending on the world-building, there will be restrictions, exceptions and stuff, but that's how I imagine things usually go.