Jack's Foot (5e Equipment)
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Wondrous Item, legendary (requires attunement)
A lucky rabbit foot on a necklace. One of two items to be taken from a tricky warlock who gives a somewhat odd riddle.
While you are attuned to this necklace, you are proficient in all skills, tools, and saving throws, but each of your ability scores becomes 15 unless it was lower.
Becoming attuned to the master's crown breaks your attunement to this item.