Aren, Ring of the mentor

This ring is ancient, and contains the stored energy of an old magician from a far off land. The gem is amber in color, and gazing into it allows one to see the mass of energy swirling inside.

Stored inside this ring is 6D6 x 2D10 energy

As an action you may spend a spell slot and add its level to the energy pool

As a bonus action, you can spend the energy stored inside to restore a spell slot equal to the amount spent

Notes: wizard, sorceror, or warlock