Still working on my giant book, so here is a spell thats hopefully going to make the cut!
Castigate
8th-level enchantment
Casting Time: 1 action
Range: 30 feet
Components: V, S, M (holy oils you fling at the target)
Duration: Instantaneous
You you throw holy oils at the target, and the target must make a Dexterity saving throw. If the target fails its saving throw, the target is cursed by your god. The target gains disadvantage on all attacks, checks, and saves, all rolls against the target gain disadvantage,and the target is vulnerable to all damage. At each new sunrise for a good aligned good or midnight for a evil aligned god, the target can attempt a Wisdom saving throw (with disadvantage from this spell), to remove the curse. A priest of your religion of any level may cast geas on the target while assigning a quest supporting your religion to remove the curse. The spell can also be ended by greater restoration, heal, or wish.
Thoughts?
Throat Punch Games 