Shackleford's Pocket Sand

Wondrous item, Uncommon (requires attunement)

''A small linnen bag, which always bristles as if filled with fine sand. Nothing comes out when shaken, only when reached in you can grasp a handful of sand. It shrinks to fit the attuned users pockets perfectly.''

The bag hold 3 charges and recharges 1D3 charges after a Long Rest.

When a creature you can see within 10 feet makes an attack roll, you can use your Reaction and expend 1 charge to reach in and throw Pocket Sand at the Creature. If the Creature has eyes and no Blindsight the Creature must make a DC 16 dexterity saving throw or suffer disadvantage on all attack rolls until the start of its next turn.”