World of Warcraft - What requires ten enchanted elementium bars?

It appears my death knight has intimidated Baron Geddon to drop his trousers lol.
Last week's episode of what is this death knight Sulfuras, Hand of Ragaros the legendary mace was completed for a second character.
I visited Molten Core raid dungeon from classic wow on retail this week at level 70 seeking more collectible appearances and killed all the bosses and adds for sulfuron hammer crafting mats up to Barron Geddon, clearing the hall before acknowledging the Firelord bewildered by our expansion content character supremacy to then to in a final blow of 16 million damage baron dropped the left half of Bindings of the Windseeker.
But I also killed Ragnaros and who would pass on a chance at the eye dropping again so no essence of the firelord and thunderfury until next week.
Today the next step was crafting a wee one hundred arcanite bars then ten enchanted elementium bars using my blacksmith for smelting and my transmute alchemist crafted up to four additional arcanite bars with ten each required to craft for a single enchanted elementium bar craft with dragonflight alchemy skills providing occasional bonus materials. Free arcanite bars at 400G each and 5000G+ per Enchanted elementium bar :)
The right binding half has been in this death knights bank for YEARS
WhAt? JUst? H@pp3ned? lol?
Observed what may be an unusual volume of thunderfury thunderaan npc quest spawns yesterday inside five minutes. congrats to them as well :)