Wondrous Item

Rare

As a bonus action, a spellcaster holding the crystal can absorb the magic within the crystal. Provided they have access to the type of spell slots, the crystal replenishes a Sum of 5 levels of spell slots.
If the caster is at their maximum spell slots, the regained slot exists as a temporary spell slot and lasts for 5 minutes before dissipating.

After being used, the Mana Crystal becomes an Empty Mana Crystal (medium), losing its glow and light coloration.

Cost: 350Gp
Weight: 5 lb.