[Autumn]

I support the addition of curses having more meaningful impact, however given that Parasitic could very easily be paired with a duelist with 160 max FP and Sadistic renewal, recovering all that FP in 1 basic attack is practically a joke, I think it should perhaps be a flat value instead to control it a bit more for low FP basic attackers instead, thats the only flaw I see in the suggestion, otherwise I like the theming behind it.

Haunted Soul and Haunted can't be left behind either, both are very nice but not at all close to these effects listed, and would quickly be overshadowed. Haunted Souls is even a doomed curse and should have a power budge a tiny bit higher than most curses.