In Wrath of the Lich King it is item level 245 and requires level 80. In MoP Classic it is item level 225, requires level 80 and sells to vendors for 1c.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Valorous Deathbringer Leggings Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Valorous Deathbringer Leggings suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Valorous Deathbringer Leggings is part of the transmog set Valorous Deathbringer Garb (Warlock only). The other 14 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Valorous Deathbringer Leggings Fits
Other Items Named Valorous Deathbringer Leggings
1 other item in the current build is also called Valorous Deathbringer Leggings. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Valorous Deathbringer Leggings
Blizzard numbers items as they are created, so the named items next to ID 45420 (45415 to 45425) were usually added in the same batch as Valorous Deathbringer Leggings: the same quest line, zone, vendor or reward set.