Choose one penalty impose on the target:

disadvantage on all tests of skill,
disadvantage on rolls to hit,
or all creatures have advantage on saves against the target’s abilities.

Fail:
This curse lasts until the target rests.

Pass:
This curse lasts until its effects apply to one roll.

A creature can be affected by multiple hexes at the same time.
You can end this curse as a fast action.

Alternate Effects:
Instead of choosing one of the listed effects for this curse you can try to inflict a mild nuisance on the target if they fail their save, such as turning a cow’s milk sour, making them forget their keys the first time they leave the house, or making them feel like they need to use the restroom. The Headmaster will determine if your effect is appropriate for this curse’s relatively low power level.

Suggested Backfire: You cast Hex on yourself.