Absorbing Shield (5e Equipment)
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Armor (shield), rare (requires attunement)
A flat black shield that feels cool to the touch. It seems to absorb the light around it.
Whenever you expend the shield's last charge, roll a d20. On a 1, the shield shatters, casting the darkness spell centered on you, which lasts for 2d6 hours.
The shield regains 1d4 charges each day at dusk.