Temporal Reckoning

You break time and space around a creature you can see within range. The target must succeed on an Intelligence saving throw or suffer several effects: they become unconscious, have their AC reduced by 3, can be critically hit on a roll of 19 or 20, and have any immunities or resistances ignored until the end of your next turn. Any damage taken during the duration of this spell is echoed at its end, causing the target to take half of the total damage again as force damage. This damage can't be reduced or prevented in any way.

This spell can't be dispelled by dispel magic.