Undo Timeline

While using this spell, you may rewind time, and only you and 10 other creatures of your choice may remember it. If a creature outside of your chosen 10 sees you casting the spell, they can choose to make a Wisdom saving throw to remember as well.You may rewind time up to a year's duration. All experience and items gained within the time are lost.

You may only use this spell once every year and, after doing so, you immediately age a quantity of time equal to the amount of time you rewinded x 100. For example, if you choose to rewind time an hour before a deadly battle, you will age 100 hours (4 days). You need to stay alive for at least one minute after the rewind is done, otherwise, the spell fails.