Barbed Caltrops

These nastier versions of simple Caltrops have a barb on all of their endpoints making them difficult and damaging to remove.

As a Utilize action, you can spread Barbed Caltrops from their bag to cover a 5-foot-square area within 5 feet of yourself. A creature that enters this area for the first time on a turn must succeed on a DC 15 Dexterity (Acrobatics) saving throw or take 1 Piercing damage and has its Speed reduced to 0 until it spends a turn to remove the barbed caltrops. Removing barbed caltrops requires one turn and a DC 15  Wisdom (Medicine) check at Disadvantage to avoid inflicting a further 1 Piercing damage, and halves the creature's Speed for that turn and 1 following turn. It takes 10 minutes to recover the Barbed Caltrops.

Crafting Barbed Caltrops requires Smith's Tools, 5 GP of iron ingots and 1 day of labor. Typically Barbed Caltrops may be purchased for 10 GP from a suitable crafter or vendor.

Notes: Damage: Piercing, Control, Debuff