Stone of Weight (Loadstone)

This stone appears to be a dark, smoothly polished stone. It reduces the possessor’s base land speed to one-half of normal. Once picked up, the stone cannot be disposed of by any nonmagical means⁠—​if it is thrown away or smashed, it reappears somewhere on his person. If a remove curse spell is cast upon a loadstone, the item may be discarded normally and no longer haunts the individual.

Prerequisites: Craft Wondrous Item, slow.

Cost to Create: 500 gp, 40 XP, 1 day.

Source: Dungeon Master’s Guide (version 3.5), page 276.