You plunge your blade into the sands, dragging it out covered in a jagged layer of divine glass, tendrils of energy snaking toward the weapon itself.
Your weapon deals an additional 1d6 necrotic or radiant damage for the duration, or until dispelled. Your weapon takes 3d6 necrotic damage and begins to decay, as the influence of the god of rage and righteous fury takes its toll.

The wielder can also expend a bonus action to remove the damage buff and hurl shards of molten glass in a 15 ft. cone, dealing 1d6 fire and 1d6 piercing damage to anything within range. Creatures succeeding a dexterity save against the wielder's spell save DC take half damage.