Wondrous Item, uncommon (requires attunement by a Spellcaster)
While attuned to this item, you can use your action to cast Swamp Mote.
In addition, you can use spend 10 minutes focusing on the amber and regain one expended spell slot. If the expended slot was of 4th level or higher, the new slot is 3rd level. Once you use the pearl, it can't be used again until you have a short rest.
Notes: Spellcaster, Buff, Utility