Bounds execption: Allows larger objects to fit in smaller containers, ritual spell effective for 1 day, can be upcast to increase amount of "overfill", some check when retrieving the item for a chance of "corruption" (small chance to retrieve a different item, or have the "overfill" become something different like have the outer edge of a bar of gold be meat)

Paralellization: High level time magic, Allows the target multiple turns to be taken simultaneously, but an equivalent cooldown afterwards (waiting for all threads or jobs to return before being able to continue), so 3 turns at once means 2 turns the target can't do anything after.

Split brain configuration: Allows focusing on multiple concentration checks/spells at once. This could also be called paralellization, or multithreaded.

Pass By Reference enchantment: requires two identical items. Once enchanted, changes to one happen to both. Room for all sorts of shenanigans.

Private field: cast on an area to prevent entry/visibility into it by unauthorized entities. Sounds inside are not audible to unauthorized entities outside of it.