Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Shadowspawn Leggings Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Shadowspawn Leggings suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Similar Items
The 3 items nearest to Shadowspawn Leggings (item level 437) in item level among Armor > Leather, Legs slot, from item level 330 to 545.
Blizzard numbers items as they are created, so the named items next to ID 221114 (221109 to 221119) were usually added in the same batch as Shadowspawn Leggings: the same quest line, zone, vendor or reward set.