Ring of Charges (5e Equipment)
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Ring, legendary (requires attunement)
You may link this item to another magical item that has charges. The ring stores up any unexpended charges from the magical item in question every day at dusk. This ring can store up to 3 charges. You may transfer the charges from this ring into the linked item as an action, allowing the linked item to regain a number of charges equal to that stored in the ring, up to the maximum amount of allowed charges for the linked item.