rare
Item
Any
Description
The item it is attached to can be used as a spellcasting focus for your spells
This runestone has three charges. While you are wearing or holding this item and fail a concentration saving throw that you make to maintain concentration on a spell due to taking damage, you can expend a charge as a reaction to succeed instead.
You can expend a spell slot of 1st level or higher to recover an expended charge.
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