A handful of thick, glassy black sand fills this small lizardskin sack.

When you fling slashing sand onto the ground, it covers an area of up to four contiguous squares with razor-sharp obsidian shards for 1 hour (the equivalent of a spike stones spell). At least one affected square must be adjacent to your space. Once activated, this item is expended and cannot be used again.

Prerequisites: Craft Wondrous Item, spike stones.
Cost to Create: 1,000 gp, 80 XP, 2 days.