The Swamp Land Waders are legendary pants in Diablo III. They require character level 50 to drop. These are the only pants that can specifically increase damage of done by skills of a specific element. While it can (potentially) roll any damage type, it only drops for Witch Doctors via Smart Loot. As of patch 2.4.1, it also multiplicatively increases damage done by Sacrifice against enemies under Locust Swarm or Grasp of the Dead.