This pale blue crystal glows with an inner light and tingles with its contained power. Created by the lost civilization of Z'leth, even the most basic user can draw on the crystal's power in time of need.
[This item originally appears in Obvious Mimic's solo adventure 'The Crystals of Z'leth.']

You can draw on the magical energies within a Z'lethan crystal to restore your own strength.

By holding a crystal in your hand and using an action, you gain the benefits of a [Tooltip Not Found]. After you've used the crystal in this way, roll a Wisdom saving throw (DC 12) to avoid falling unconscious for one minute (even if you are normally immune to sleep effects).

Once used, the crystal loses its glow and becomes a dull, blue crystal worth 10 gp.