Chronal Lock / Chronal Restoration

Chronal Lock (Ritual)
You touch an object or creature as part of a ritual and create a chronal image of the target locked in time. You can create a number of these images equal to your spellcasting ability modifier which last until dispelled or triggered with Chronal Restoration.
The chronal image moves with the target but cannot be seen by anyone other than the caster or a creature with true sight

Chronal Restoration (1 Action)
You touch an object or creature that you have a chronal image of and restore it to the state it was in at the time of casting Chronal Lock. If the target is an object it is restored fully, if the target is a creature it regains a number of hit points equal to 3d8 + your spellcasting ability modifier.

At Higher Levels. When you cast Chronal Restoration using a spell slot of 4th level or higher, the healing increases by 1d8 for each slot level above 4th.