Déjà vu

You compel a creature to glitch backwards through time, and experience again whatever has just transpired.

When used on a recently damaged creature, that creature makes a Charisma saving throw against your spell save DC. On a fail, they re-experience the attack and take up to 10 damage of the same type, not exceeding the amount originally taken. On a pass, they have learned from their error, and respond more tactfully, taking half of the damage that this spell would do.

When used on a recently healed creature, that creature makes a Charisma saving throw against your spell DC to try and comply with the glitch in time. On a fail, they cannot perfectly synchronize, and receive half the healing this spell would do. On a success, they re-experience the healing and restore up to 10 hit points.

At Higher Levels. When you cast this spell using a spell slot of second level or higher, the maximum damage dealt and health restored increases by 10  per level.