Time Distortion Pocket

You gain the ability to shunt creatures back in time, up to 100 years. When a creature enters into the 60 foot radius pocket you have set, they must make a DC 18 CHA saving throw or be pushed back in time to a moment that you choose for one minute. Nothing happens to an affected creature upon a success. A creature can choose to fail the saving throw willingly if they know you are casting this spell. Your interference with past events may or may not affect the present timeline, depending on ...(*illegible*)... so extreme caution must be taken.

Some creatures, especially undead creatures, gain the ability to straddle both the present and the past within the time pocket. Half of a creature's total HP remains in their form within the past, while the other half remains in their form in the present. A creature that loses all of its past hit points is immediately killed within the present. A creature that loses all its present hit points remains alive in the past, but its present form is destroyed and it remains stuck within the past.