Time Transfer

You touch a willing creature (or yourself) and force the negative affects of time out of their being while retaining all the knowledge and enhancements to their physiology over the years into another living vessel.  This vessel can be any living thing from a tree sapling to a dragon.  The years pushed out of the target are transferred to the intended recipient of the "time."  

As much as 2 centuries may be pushed from 1 target to another as long as the recipient will not die of old age until after the spell is complete (for example, if a humanoid lives less than 80 years, it cannot be the recipient of more than 80 years.)  

This spell works best with transferring long periods of time with long-lived creatures, (such as dragons,) or flora, (such as Oak tress.)  The recipient organism does NOT need to be willing, but it does help besides incapacitating the target.