You can draw on the magical energies within a Z’lethan crystal to restore your strength. Holding a crystal in your hand and using an action gives you the benefits of a short rest. After using the crystal in this way, roll a Wisdom saving throw against DC 12 or fall unconscious for one minute (even if you are normally immune to sleep). Once used, the crystal loses its glow and becomes a dull blue crystal worth 10 gp.