This item is acquired in-game. See its sources below.
An Epic Gem, item level 50, binds when picked up.
First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Mephistroth's Rib adds Relic Enhancement when socketed. See Mephistroth's Rib on the gem list for every socket it fits.
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Mephistroth's Rib uses icon file 1029749, which 12 other items also use. The 8 closest by item ID:
Blood Troll Bone Piercing ID 152664 · QuestSturdy Quill ID 152986 · QuestStone Tusk ID 158869 · Miscellaneous · item level 40Unbroken Claw ID 124438 · Trade Goods · item level 40 "Found on beasts, or gathered by players with the Skinning skill. Can be bought and sold on the auction house."Hardened Tail Bone ID 176852 · Miscellaneous · item level 120Wailing Bone ID 109101 · Trade Goods · item level 35 "Secret ingredient."First Heads Horn ID 192693 · Miscellaneous · item level 70Dragon Tooth Shank ID 201193 · MiscellaneousBlizzard numbers items as they are created, so the named items next to ID 146931 (146926 to 146936) were usually added in the same batch as Mephistroth's Rib: the same quest line, zone, vendor or reward set.
Fel Command Beacon ID 146926 · Gem · item level 50
Inferno Oil ID 146927 · Gem · item level 50
Heat Absorbing Prism ID 146928 · Gem · item level 50
Moonstone Figurine ID 146929 · Gem · item level 50
Pure Arcane Powder ID 146930 · Gem · item level 50
Condensed Storm's Fury ID 146932 · Gem · item level 50
Highborne Martyr's Blood ID 146933 · Gem · item level 50
Untouched Holy Candle ID 146934 · Gem · item level 50 "The candle has fortified."
Valarjar Insignia ID 146935 · Consumable · item level 10
Dreamweaver Insignia ID 146936 · Consumable · item level 10The raw ItemSparse values for item 146931 in the current client build.
Read from the World of Warcraft client build files: Item, ItemSparse, Lock, Holidays, AreaTable and CollectableSourceVendor.
TheWoWDB