This item is acquired in-game. See its sources below.
A Rare Miscellaneous, item level 1, binds when picked up.
First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Blizzard numbers items as they are created, so the named items next to ID 258482 (258475 to 258488) were usually added in the same batch as Ysergle: the same quest line, zone, vendor or reward set.
Tuskarr Shoreglider ID 258475 · Miscellaneous · item level 10 "Teaches you how to summon this mount."
Frostbrood Proto-Wyrm ID 258476 · Miscellaneous · item level 10 "Teaches you how to summon this mount."
Telix the Stormhorn ID 258477 · Miscellaneous · item level 10 "Teaches you how to summon this mount."
Algarian Stormrider ID 258479 · Miscellaneous · item level 10 "Teaches you how to summon this mount."
Gnomelia Gearheart ID 258481 · Miscellaneous "Teaches you how to summon this companion."
Fathom ID 258483 · Miscellaneous "Teaches you how to summon this companion."
Sunlance of Viryx ID 258484 · Weapon - Polearm · item level 44
Pattern: Beloved Elekk Plushie ID 258486 · Recipe "Teaches you how to craft Beloved Elekk Plushie."
Plans: Murder Row Fleet Feet ID 258487 · Recipe "Teaches you how to craft Murder Row Fleet Feet."
Skypaw Glimmerfur ID 258488 · Miscellaneous · item level 10 "Teaches you how to summon this mount."The raw ItemSparse values for item 258482 in the current client build.
Read from the World of Warcraft client build files: Item, ItemSparse, Lock, Holidays, AreaTable and CollectableSourceVendor.
TheWoWDB