Caltrops

Caltrops are small sharply pointed bits of metal made to impede movement across the ground. Most are made from two double ended nails, wrapped around each other in a manner that causes one of the points to be upright and prime for puncturing a foot. They are typically sold by the bag. Spreading a bag of Caltrops over a 5ft x 5ft area is a Standard Action Rec 5. Picking up a bag of Caltrops from a 5ft x 5ft area takes a moment.

A creature that moves into an area with caltrops spread over it is subject to the following attack:
Caltrops