This item is acquired in-game. See its sources below.
A Rare Two-Handed Sword, item level 278, requires level 60, binds when picked up.
First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Read from the World of Warcraft client build files.
2 quests list Dunesplitter among their rewards in Blizzard's quest data.
Beheader's Poleaxe, 
Knowledge Seeker's Cudgel, 
Scarab Blaster, 
Fist of the Treasure Seeker, 
Scorpion Slicer, 
Raider's Lost Spire, 
Tomb Raider's ShankBeheader's Poleaxe, Knowledge Seeker's Cudgel, Scarab Blaster, Fist of the Treasure Seeker, Scorpion Slicer, Raider's Lost Spire, Tomb Raider's ShankRead from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
In their in-game specialization descriptions, these specs name swords among their preferred weapons:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Dunesplitter uses icon file 4037034, which 13 other items also use. The 6 closest by item ID:
Squallbreaker Greatsword ID 199400 · Weapon - Two-Handed Sword · item level 252Fire-Blessed Greatsword ID 199049 · Weapon - Two-Handed Sword · item level 200Drakeslayer's Greatsword ID 199027 · Weapon - Two-Handed Sword · item level 200Large Brass Cleaver ID 198007 · Weapon - Two-Handed Sword · item level 200Ohn'ahran Greatsword ID 197701 · Weapon - Two-Handed Sword · item level 200Doomsayer's Greatsword ID 194395 · Weapon - Two-Handed Sword · item level 200Blizzard numbers items as they are created, so the named items next to ID 201304 (201299 to 201309) were usually added in the same batch as Dunesplitter: the same quest line, zone, vendor or reward set.
Docile Frosty Soul ID 201299 · Miscellaneous · item level 61 "The resentment within the captured frosty soul has subsided and it can be safely released from its prison."
Iridescent Ore Fragments ID 201300 · Miscellaneous
Iridescent Ore ID 201301 · Miscellaneous "You suspect it will be a while before you find such a brilliant ore again."Scarab Blaster ID 201302 · Weapon - Gun · item level 278Beheader's Poleaxe ID 201303 · Weapon - Polearm · item level 278Fist of the Treasure Seeker ID 201305 · Weapon - Fist Weapon · item level 278Knowledge Seeker's Cudgel ID 201306 · Weapon - One-Handed Mace · item level 278Raider's Lost Spire ID 201307 · Weapon - Staff · item level 278Scorpion Slicer ID 201308 · Weapon - One-Handed Sword · item level 278Tomb Raider's Shank ID 201309 · Weapon - Dagger · item level 278The raw ItemSparse values for item 201304 in the current client build.
Read from the World of Warcraft client build files: Item, ItemSparse, Lock, Holidays, AreaTable and CollectableSourceVendor.
First-party render from the game files. Model © Blizzard Entertainment.
The sounds the game client plays for this kind of item.
More in the sound library.
TheWoWDB
