Chronal Reserve

You choose a willing creature you can see within range and manipulate its temporal state, drawing a portion of its future span into an enchanted chronoglass. You extract a number of years, chosen by you, to a minimum of 1 year and up to a maximum equal to 10 times the level of the spell slot used to cast this spell. The creature must have the sufficient time remaining in its natural span to support the amount drawn. This causes no immediate physical or mental change to the target, but reduces its remaining time accordingly.

The extracted temporal essence is then sealed within the chronoglass used in the casting of the spell, which becomes a vessel of condensed time. While it holds this essence, the chronoglass is virtually indestructible and cannot be damaged or broken by any means.

When you cast this spell, you can designate any number of creatures as able to activate the chronoglass. A designated creature can then use an action to shatter it, releasing its contents and absorbing the stored years into its own personal timeline.

You can have only one chronoglass created by this spell at a time, and you can’t cast this spell again until the existing chronoglass is either shattered or dispelled.