Inspired by how Warlock class works, some runes could cost health (blood), poise or durability. Thus you could play more with this as resources.
Blood Runes - cost X% amount of your health to cast
Poise Runes - inflicts X% of poise damage to you
Durability - Damage your weapons (Not sure how would it works with infinite durability tho)
Blood runeskinda already exist , ty to 2 rings, and they have a bit too much synergy with lifesteal, so if they ever implement them they should disable lifesteal on their damage specifically or the should cost both focus end health
I don’t see Poise Runes working without them being connected with focus as well, they could be particularly committed attacks that do more damage but are riskier
for Durability I don’t like the idea, but there could be some runes that have a limited number of uses that reset on wispers, but only utility and buffs runes like: light (6 uses), elemental affinities (6 uses), extra max focus (2 uses), etc. and once uses are finished they require focus or you can’t use them anymore until you find a wisper.
I know the rings. But are op as you said. There could be a status of being inmune to health/lifesteal/food for X seg after using a blood runes.
I really like the idea of durability runes, since you have repair powder, and Thomas said that he want durability to be an active resource, thus the durability based enchantments. They shouldn’t be usable with infite durability gear tho.