kigmatzomat
Legend
It's a level 6 spell though, right?
Yeah, I misread the spell levels in OP.
Contagion is good at that level, given you can then weaken any one save type, meaning your non-necro spells also get a boost. And if you have big bad with a habit of teleporting away you can nerf them for up to a week.
Bestow curse is good, especially upcast with 5th level slots so it's non-concentration. 8 hours of "make a wis save each round at disadvantage or just dodge that turn" is brutal.