Long story short I feel like i need to establish more 'negative' magic in my system. So even if you have links, advice, or even just random ones I could attempt to build off of that would be absolutely fantastic. My only rule is that curses should always have 'stages' for how much it effects its victim with the last stage leaving them in intense pain. On that note curses should be very intense, as they are always direct punishments from immortals/deities so lots of suffering!
Hopefully this all makes sense and if you need to ask me more questions then go for it!