Absent from Forever: this item ID cannot be found in the Forever client. Its Classic version is shown below.
Data source: game client item records. Forever build 1.60.1.70888 ; Classic Era build 1.15.9.70576 . View the compiled item record . A beta record does not confirm in-game availability. Verify acquisition in the game and official announcements.
Classic 1.15.9.70576
Leggings of the Festering Swarm
Binds when picked up
LegsCloth
101 Armor
+23 Intellect
+17 Stamina
Requires Level 60
Equip: Increases damage dealt by fire spells and effects by up to 57.
Sell Price: 5g 71s 4c
Forever Beta 1.60.1.70888
This item does not exist in the Forever client.