Arcane crystals originate from the planes, where arcane powers seep through every single dust speck. Aberrations that feed on this magic carry these raw mineral formations with them through their travels. Mortal magic users find these properties useful, allowing them to manipulate the Weave to their advantage.
When tapped into, an arcane crystal becomes dormant for a period measured in centuries and restores 1 level of spell slot for the character. Multiple stones can be tapped into simultaneously to recover multiple spell slot levels. The character can choose to distribute these levels in any combination they'd like (e.g., tapping into three crystals can restore a 3rd-level spell slot, three 1st-level spell slots, or a combination of one 1st-level and one 2nd-level spell slot).
While untapped, these crystals glow brighter in the presence of magical sources, within a range of 30 feet. Some aberrations use this to identify magical items, beings, or even illusions.
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