My wife gave me a solid idea, and I feel its time to throw this at my players!

Remove Spells

3rd-level enchantment

Casting Time: 1 action
Range: 60 feet
Components: V, S
Duration: instantaneous

You attempt to remove abilities from a creature you can see within range. It must succeed on a Wisdom saving throw or the creature loses 1d3 spells, spell slots, or uses of abilities that refresh after a long rest or per day abilities. The abilities or spells that are lost are the creatures choice and may be of any spell level. If they creature only has at will or level zero spells, it is unaffected.

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the number of lost spells or abilities increases by 1d3 for each slot level above 3th.